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HIV P24 Ag/Ab Test, Duo Test, Combo Test at our Clinic

Updated information on Rapid Anonymous HIV Combo test at our Clinics. 

 

Info leaflet for SD Bioline Combo Test

Info leaflet for SD Bioline Combo Test

I have been getting a lot of question with regards to the Duo test or Combo test as it is also known as.

Let’s first get some basics right:

Duo Test = Combo Test = P24 Ag/Ab test

All these terms refer to the same thing. Basically it is a test that simultaneously tests for the HIV P24 Antigen and the HIV antibody.

HIV Prevention within 72 hours of exposure (PEP) – Click Here

The HIV P24 antigen is a small piece of protein that is found on the capsule of the HIV virus. When a person is infected with HIV, these bits of protein can be found floating in the blood. The HIV P24 test is a test that detects these bits of protein. This test was first developed as a HIV screening test but rapidly ran out of favor due to the development of more advanced NAAT tests. (For more details on NAAT testing please read: http://www.drtanandpartners.com/nucleic-acid-amplification-testing-naat/)The window period for P24 testing is also very small. This test alone is only accurate for between 3 and 6 weeks post exposure. So it is a test with very limited applications unless combined with the HIV antibody test. The presence of P24 Antigens in the blood indicates a recent HIV infection.

Click here for details on getting the Combo test at our Clinics

We all already know that the HIV antibody test becomes quite reliable at 4 weeks and as good as conclusive at 6 weeks. Although most health authorities still recommend a 3 months window period. So putting these 2 tests together gives you a very powerful tool to diagnose HIV infection in as little as 3 weeks. Personally I prefer to conduct the Combo test at 4 weeks because I believe that is when the level of P24 antigen peaks in the blood giving us maximum accuracy.

In our clinic, we use the SD Bioline Rapid HIV Combo Test 2.0. It is a rapid test that takes only 20 minutes for us to get results. We are also approved to conduct this test as part of the Anonymous HIV testing Program.

The test is conducted very much like the HIV antibody test. All we need is blood from a finger prick. (For more details on Anonymous HIV Testing at our clinic please read: http://www.drtanandpartners.com/anonymous-hiv-testing-at-our-clinic/)

SD Bioline HIV Combo Test showing a positive result (2 red bars)

SD Bioline HIV Combo Test showing a positive result (2 red bars)

 

 

 

 

 

 

 

 

 

SD Bioline Combo HIV test showing a positive result. Note the test line is very faint. This could be due to a very recent HIV infection or the test could be false positive (1% chance).

SD Bioline Combo HIV test showing a positive result. Note the test line is very faint. This could be due to a very recent HIV infection or the test could be false positive (1% chance).

 

 

 

 

 

 

 

 

 

Multicentre clinical trials have shown 100% sensitivity and more than 99% specificity.

This kit has been registered with Singapore’s Health Science Authority (HSA).

So the Combo Test has many advantages including:

1. Earlier detection of HIV infection.

2. Rapid (20 minutes)

3. Anonymous

The only problem is that it costs more. At our clinic is costs $200 ($214 with GST).

Click on the picture for the latest information on the HIV testing Window Period

Click on the picture for the latest information on the HIV testing Window Period

 

 

 

 

 

 

 

 

 

Click here for HIV Testing FAQ

More on HIV symptoms.

If you have any questions, visit our free online forum on sexual health, HIV and STDs.

Click here to see the full range of our HIV/STD Services

If you need a HIV test visit Our Clinics anytime during our opening hours. You do not need an appointment.

We are now open on weekends.

Find out more about Anonymous HIV testing at our clinics.

Can’t wait for 3 months to find out? Find out more about Anonymous Rapid HIV Combo test at our clinics.

If you had a high risk exposure to HIV within the past 72 hours, you can take medicines to reduce your risk of actually contracting HIV. Find out more on HIV PEP Treatment.

We have 3 locations conveniently located at Robertson Walk and Bencoolen Street and Novena Medical Center.

We are Open on Saturdays and Sundays.

Click Here for Contact Details, Address and Opening Times.

Related Topics:

Anonymous HIV testing at our Clinics

HIV – Understanding the Window Period

Cost of HIV/STD tests at our Clinics

Condom Broke

Getting HIV from Oral Sex

More on HIV symptoms

How long can HIV live outside the body?

About Dr. Tan
Dr. Tan graduated from the National University of Singapore in 2001. His residency was in the two largest public hospitals in Singapore; Tan Tock Seng Hospital and Singapore General Hospital.

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995 Comments

  1. Hi Dr. Tna,

    Malaysia only has Elisa test in the local government. Should i have the test on the 6th weeks. is it conclusive?

    • Hi JK,

      No. Test at 3 months post exposure.

      rgds

      Dr Tan

      • Dr. Tan,

        Correct me if i am wrong. 6 weeks are almost 99 accuracy? i am sure to do another test at 3rd months

        • Hi JK,

          I would say it is more like 99.9% accurate. I personally think a 3rd Gen rapid test at 6 weeks is as good as conclusive.

          rgds

          Dr Tan

          • Hi Dr.

            This is the 27th day or 4th weeks. i went for a test and the result is negative. the test is elisa 2nd generation because Malaysia local clinic don’t offer 3rd generation.

            I am wonder can i go to your GP to get a test tomorrow morning?

          • Hi JK,

            Sure you can.

            rgds

            Dr Tan

          • hi dr.

            the clinic is using advanced quality finger prick test. it is manufactured by Intec Products Inc.
            The result is Negative on the 27th day of post exposure. i understand that the result is not conclusive but just want to have a peace of mind. Is the negative result more than 90% confidence level based on your experience.

            I was planning to go to your clinic yesterday but unfortunately, my house was rob and incurred high losses. So, i can’t afford myself to go there anymore.

          • Hi JK,

            I am not familiar with Intec Products Inc. Generally HIV antibody tests are about 90% accurate at 27 days post exposure. I am very sorry to hear about what happened to you. I hope the police will catch the criminal so that he/she doesn’t get the chance to do the same to anyone else.

            rgds

            Dr Tan

          • Hi Dr.

            I just got my P24 Antigen test result on 27 days of post exposure. the result is negative.

            Is the result conclusive?

          • Hi JK,

            Did you do a combo test or only the P24 antigen?

            rgds

            Dr Tan

          • Hi Dr.

            Dr:Did you do a combo test or only the P24 antigen?

            Only p24 antigen test based on the given report. What’s wrong Dr.?

          • Hi Dr.

            Sorry to reply your question but this time with more information. Kindly ignore the previous comment.

            Dr:Did you do a combo test or only the P24 antigen?

            Only p24 antigen test based on the given report, The clinic took my blood on 27th day of potential post exposure and i got back the result one week after. What’s wrong Dr.?

            Below is the explanation from Gribbles Pathology Malaysia:
            HIV Ag/Ab Screening Assay
            The HIV screening assay performed by Gribbles Pathology is known as a “combo” assay. It detects not only antibodies to HIV which are generally produced 3 to 4 weeks after exposure, but also p24 antigen which can be present in detectable amounts at 2 weeks post exposure. This combination enables detection of an infected individual at the earliest possible moment by minimising the “window period” between infection and detection.

            The link is here:
            http://www.gribbles.com.my/commontest.html#hiv

          • Hi JK,

            Really? Antigen only? Because it sounds from the explanation that the test includes both Antigen and Antibody. This is conclusive at 27 days post exposure.

            rgds

            Dr Tan

          • Hi Dr Tan.

            I am very very sorry to reply you again because i just got confirmation from my doctor.

            He said the test only has P24 Antigen and he said this is accurate and i just need to re test after 6 months. I have done the test on 27th day of post exposure.

            This is your question:

            Dr:Did you do a combo test or only the P24 antigen?

            I am very sorry to you for posting 3 times of comment because i want to give you the most updated and accurate information. Sorry Dr. Tan for all the trouble.

          • Hi JK,

            I really do not quite get what your doctor means when he says it is ‘accurate’ yet you still need to test after 6 months. From the Gribbles explanation it seems to me the test is for both antigen and antibody. Yet your doctor says it is only for antigen. This is all very confusing and obviously I am not getting the full picture. This is why you shouldn’t rely on this forum for formal medical advice. Just listen to your doctor’s advice.

            rgds

            Dr Tan

          • Hi Dr. Tan,

            But the issue is i trust you more than my doctor. My doctor seen doesn’t care much attitude when i spoke to him.

            One of the most important reason i always come back to you is because i feel you are caring person and you concern me than my doctor and you are more professional.

            Thus, if only with P24 Antigen test on 27th days post exposure. Is this negative result conclusive?

          • Hi JK,

            I appreciate the compliment. However you must understand that this forum is not a medical consultation. In legally technical terms, I do not owe you a duty of care like your doctor does. So I will always defer to your doctor’s advice. Furthermore, I can never understand your case as well as your doctor who has seen you, examined you and taken a proper history. In summary, you should always listen to your doctor’s advice and use my opinion only as a guide. A P24 antigen alone is not conclusive at 27 days post exposure. You need a repeat HIV antibody test at 3 months.

            rgds

            Dr Tan

          • Hi Dr. Tan,

            I understood the issue now. Just my last comment. i have done Rapid finger prick test on 27 days(2nd generation) and P24 Antigen test separately and both come out as Negative.

            I am very appreciate your time and effort deep inside my heart because you have done better than my doctor despite i have paid him but you have earned nothing from me at all.

            I definitely listen to your advise conduct another test at 3 months. Probably do it another one at 6th weeks.

            Dr. Tan, I am glad to receive your voluntary support and deep down inside my heart. I wish you and your family have a wonderful year 2012.

      • Dear Dr Tan,

        I received unprotected oral and had protected sex with a prostitute. After 2-3 days got severe night sweats but was not stressed. Now its been 5 weeks and i still have them. also started getting joint/muscle pain since 10 days. have had diarrhea. tested negative on duo after 20, 24, 28, and 36 days. should i be worried about hiv? please help me. what other disease or std could be causing this? thank you

        • Hi KK1982,

          You do not have HIV. See a doctor about your other symptoms.

          rgds

          Dr Tan

      • retchard

        hi
        i will ask you about risk from hiv
        i contact with same gril in 11/11/2012
        i have duo hiv test in 15/1/2013 the result was negative
        than i have rapid test in one minet in the 25/2
        the result was negative .also i have oter rapid test in 4/4
        the result was negative
        so i will ask you that is enugph test or i need more
        there is any resk from hiv now?
        thanks

    • Guy from Honf kong

      Hi dr! I am a young men from hong kong, I did a low list viginal protected sex with a sex worker in hong kong with condom protected for about one minute, inspected there’s no brokern of condom , however I found some white liquid at her pussy, no other sexual intercourse except protected viginal intercourse.. I was worried about whatever the condom is in good condition but u know, the root of penis is hard for fully cover.. I have had 3 test toally…. First 4th elisa combo was done on 14days post exposure (done at lab.), rtpcr (rna) on 21days post exposure, eventually another 4th elisa combo test at 45days after exposure (use machinery test in lab.) , all result are negative including HIV 1/2, Do I still need or recommended to have a final resting when reach 90days? Hows my possibility to get HIV? Btw, almost test all STD an only hpv6 is positive… Thank you to your reply since the HIV related symptoms is keep surrounding me.. So nervous …

  2. Hello Dr,

    i talked to u before, i have done the p24 Ag/Ab (HIV 1+2) at 38d, its the combo test. as u told me before it is conclusive same confirmed with the laboratory. when reading ur description to the test, u said its expensive & takes 20mn. i paid in Lebanon $ 20 & i took the laboratory 3 hours to give me the results.
    is it logic?

    Regards,

    • Hi Xperia,

      Greetings to Lebanon from Singapore. It costs a lot more in Singapore. I really cannot comment on the price in Lebanon. There are many ways to conduct the combo test. The one I use is the rapid combo test by Alere that takes 20 mins. For more details see: http://www.drtanandpartners.com/hiv-p24-agab-test-duo-test-combo-test-at-our-clinic/. The lab in Lebanon might be using another method that takes longer.

      rgds

      Dr Tan

      • So my combo test at 38 d post exposure would be conclusive? Right no matter what the method and the price?
        Regards,

        • Hi Xperia,

          The price certainly does not affect the accuracy of the results. I am unable to comment on how accurate the results are unless I know exactly what kind of testing method they are using. Assuming the test methods are validated, then a P24 Ag/Ab test at 38 days post exposure is conclusive.

          rgds

          Dr Tan

          • Hi Dr,

            the method was the ECLIA & here in lebanon we use the latest technologies.
            do you think Duo test through ECLIA method 38d after exposure is conclusive?

            regards,

          • Hi Xperia,

            Yes I think it is.

            rgds

            Dr Tan

  3. Hi Dr. Tan, my exposure was on 3/11 and I did the duo test on 16/12. The doctor advised the result as negative. He advised to do a rapid test again aft post 3 months exposure. I understand P24 decreases rapidly after 4 weeks post exposure. But is the antibody segment of the duo test good enough to conclude anything now?

    • Hi JL,

      You did the test at 6 weeks post exposure. You are right that by this time, the P24 portion is no longer accurate. The antibody portion at 6 weeks is very accurate. I agree with your doctor on the need to repeat the antibody test at 3 months post exposure.

      rgds

      Dr Tan

  4. Hi Dr. Tan, how is the accuracy compared to the 20 mins oral quick and finger prick rapid tests?

    • Hi JL,

      You mean the difference in sensitivity between OraQuick using saliva and Determine using finger prick whole blood? Determine has a slightly higher sensitivity for general screening. It is far superior to OraQuick using saliva for special situations like testing patients already on ART.

      rgds

      Dr Tan

      • Hi Dr. Tan,

        Thank you for your reply. What is ART? Pardon me for my ignorance.

        • Hi JL,

          ART – Anti-Retroviral Treatment. I should apologize. I sometimes assume everyone writing in would have done heap loads od reading already and are familiar with these acronyms.

          rgds

          Dr Tab

      • Hi Dr. Tan, happy cny to u and yr family. The brand of the duo test I took is Determine. It is recognized by the health board. Am I right?

        • Hi JL,

          Happy Year of the Dragon to you and your family. May the Dragon bring you good health and good fortune. Yes, Singapore’s HSA recognizes 2 rapid tests: Determine and Oraquick.

          rgds

          Dr Tan

          • Hi Dr Tan, is there a difference between HIV Combination P24 Antigen/Antibody Test (HIV Duo Test)& Rapid Fingerprick Blood HIV-1/2 P24 Antigen/Antibody Combo (HIV Duo Test? Apart from the time to get the results.

          • Hi JL,

            They are exactly the same test. One is done rapid i.e. point of care testing and the other is sent to the lab. It’s like asking me what’s the difference between hand squeezed orange juice and machine squeezed orange juice.

            Rgds

            Dr Tan

  5. Dear Dr
    I had sex with a SW on Dec 15th (insertive). I had protected sex. She also did oral sex on me but rejected it quite fast.
    Am I at risk?
    Is it also dangerous if the SW touched my sex with her vagina without penetration.
    In order to be safe I would like to conduct an accurate test as fast as possible? Which one and when?
    Thank you

    • Hi JB,

      You had protected insertive vaginal sex. Your risk of catching HIV is very very small. The test you can take soonest is the HIV RNA PCR best done at 12 days post exposure. Do not forget to ask your doctor about screening for other STDs also.

      rgds

      Dr Tan

      • Thank you
        do you do this test? How much is it? and how accurate is it?

        • Hi JB,

          Yes we do. It costs $200. It is best done within 3 to 6 weeks post exposure. For performance characteristics of the test please read the article above.

          rgds

          Dr Tan

          • Thank you
            so HIV P24 Ag/Ab and HIV RNA PCR
            test are the same?
            Rgds
            JB

          • Hi JB,

            No! They are completely different. HIV RNA PCR measures the amount of virus in blood. It is used for early detection of HIV and more importantly for monitoring of viral load during treatment. P24 detects the presence of an antigen. The P24 antigen rises rapidly at 3 weeks then falls rapidly at 6 weeks.

            rgds

            Dr Tan

  6. Hi Dr,

    for example, if i am taking PEP for 28 days, and on 29 days, can i test using P24 combo test. will it be conclusive? Does PEP really prevent being affected by HIV and how many %?

    • Hi mml,

      Theoretically speaking, PEP can affect the accuracy of all HIV tests. Furthermore, in order to have been prescribed PEP, your risk would have to have been significant. The protocol for PEP requires a person to be followed up with HIV antibody screening for 6 months. The studies on the effectiveness of PEP are very limited. We base our statements on data extrapolated from studies on needle stick injuries, animals and rape victims. Since you have already been prescribed PEP, I suggest you follow up closely with your doctor.

      rgds

      Dr Tan

  7. Hi Dr,

    for example, if i am taking PEP for 28 days, and on 29 days, can i test using P24 combo test. will it be conclusive? Does PEP really prevent being affected by HIV and how many %? (earlier post)

    Can i test at 25 days using P24 combo test and be conclusive?

    • Hi mml,

      PEP treatment and follow up is not a simple matter. The effectiveness of the treatment and validity of tests post PEP is complicated. Furthermore, your risk must have been significant to be prescribed PEP in the first place. This is really not the platform to discuss such issues. I suggest you visit the doctor who prescribed you the medication to clear up your doubts.

      rgds

      Dr Tan

  8. Hi Doctor Tan

    I just had a rapid blood test at a government clinic (its negative, btw), when the nurse pricked my finger, instead of drawing blood using a tube, he directly placed my pricked finger in the strip and the open part even touched the strip for a good 5-10 seconds.

    is this dangerous? will i get HIV?

    Thanks

  9. dear Dr,

    is the Duo test conclusive after 3 months???

    regards,

    • Hi Jhon,

      Why do a Duo test at 3 months? It is a waste of money. The P24 portion is completely useless. You might as well do an antibody test only. It makes no difference. An antibody test is accurate at 3 months.

      rgds

      Dr Tan

      • because i didn it 36days post exposure & 3months and it was negative, that’s why i am asking.
        it is conclusive?
        thank you.

        • Hi Jhon,

          Did you not understand my previous reply? A Duo test tests for both P24 antigen and HIV antibody simultaneously. P24 antigen falls rapidly after 6 weeks. i.e. testing for P24 after 6 weeks is uselss. Luckily for you, the other portion of the Duo test tests for HIV antibodies. Testing for antibodies is accurate at 3 months. So what I am saying is you should NOT have done a Duo test at 3 months. It is a waste of your money. You should have only done the HIV antibody test. But the fact is an antibody test is accurate at 3 months. Since the Duo test also includes an antibody test then it is conclusive for you. Did the doctor who conducted the test for you not explain all this to you?

          rgds

          Dr Tan

          • Dear Dr Tan
            It makes a difference in my country Duo test really cheap. General Hospital using EIA method Test Hiv 1 & 2 AB-Ag regardless of the months exposure.
            Duo test =$20 at Gribbles Eclia method
            Antibody test ALSO =$20 at Pathlab
            Make no difference if take Duo test Or Antibody test. IF take p24 antigen test only (NOT included Antibody Test ) it costs 200 =($83)currency exchange rate) at Gribbles.
            If i want go to see you how much you cost me for the consultation fee?is it $35?if i talk to much or waste your time to answer my question do you charge me more than $35?
            One more question,can you speak Mandarin,my english really poor i do not know how to make you understand my question.
            Thank you.^^

          • Hi miao,

            That is very cheap. There is no way we can match or even come close to those prices in Singapore. I guess the cost of doing business here is much higher. Isn’t it strange that the P24 alone costs more than the Duo test? How very interesting. Our consultation rate starts at $35. The price will go up if the consultation is extended. Yes, I can speak mandarin. In fact, in our new forum coming out in Jan 2012 (hopefully) there will be Mandarin and Arabic sections. Go ahead and post a question in Mandarin. I will answer you in Mandarin also.

            rgds

            Dr Tan

          • Hey dr tan. Did a test 4 months post exposure with hiv ag/ab combo architect test. Turned out negative. Does that mean that the test is conclusive already?

            Thanks

          • Yes in my opinion the test is conclusive. Please check with your doctor. Please post any follow up questions on http://www.askdrtan.com

  10. Hi Dr,

    They mentionned in the laboratory that the Duo test 5.5 weeks post exposure would be definitive. if there was any infection it would had appeared in the test at 5.5 weeks.

    is that true?

    • Hi jade,

      Because most health authorities still recommend a 3 months window period, few doctors will stick their necks out and go against these recommendations. Simply because it does not benefit them in anyway to do so. It is bad for the patient but covers the doctors quite well. Who is this ‘they’ that you speak about? Doctors? Lab technicians? As far as my personal opinon goes, it is true.

      rgds

      Dr Tan

      • the owner of the Laboratory is a Dr. & Prof in Biology, a renown women in the field. she informed me that usually it is conclusive at 5.5 weeks & do not need to retest. is it true?

        regards,

        • Hi jade,

          I am not doubting the credentials of your doctor or lab. What I am saying is most health authorities recommend a window period of 3 months. The shortest window period I have ever seen recommended was 6 weeks. So saying a test is conclusive at 5.5 weeks is really being quite brave. But of course your doctor understands your case best and there is really no reason to doubt her. If I were you, I would listen to her advice and stop worrying.

          rgds

          Dr Tan

          • Maybe because the Dr is my relative & dont want to cost me money for doing another test if she finds that the duo test is enough at 5.5 weeks and my exposure was low.

            Thank u dr,

          • Hi Jade,

            You are welcome.

            rgds

            Dr Tan

  11. it is a renown & certified laboratory

  12. Dr. I didnt understand well what u mean by It does not benefit them Anyway to do that.
    It is bad for the patient but covers the doctors quite well. Do u think that 5.5 weeks is enough for the duo test to detect antigen &/or antibody?

    Thanks a lot

    • Hi Jade,

      Think about is. If the Ministry of Health says the HIV window period is 3 months and a doctor tell his/her patients 6 weeks is good enough. The doctor may be right and confident in his/her knowledge but the Ministry can always knock on his/her door and cause all sorts of trouble. If he/she loses his/her practicing license because of this and his/her family starves then who suffers? The patient is happy with the fact that he/she is HIV negative at 6 weeks while the doctor is eeking out a living waiting tables. So to the doctor, it is alot easier and safer to just tell the patients that the HIV window period is 3 months. So the patient suffers for another 6 weeks but the doctor keeps his/her license. Since your doctor has already told you the test is conclusive, then you should listen to her advice. You also mentioned that she is an expert in her field, there is really no need for you to seek confirmation from me. She knows your case a lot better than I do. I’m sure she is correct.

      rgds

      Dr Tan

  13. Good morning dr.,

    I had protected vaginal sex with a girl with unprotected oral sex for less than 1 mn. Then i think organ rubbed her vagina.
    I went & tested negative for the p24 combo test (ag/ab hiv 1+2) 40 days after exposure. Do i need to retest & was it a high exposure? Could i get STD’s?

    Have a nice day.

    Kind,

    • Hi Franco,

      You do not have HIV. You should screen for the other STDs.

      rgds

      Dr Tan

  14. G morning dr, i had protected vaginal sex with a girl with unprotected oral for less than 1 mn, then our organs rubbed to each other after we finished. I tested negative for duo test (p24 ag/ab hiv1+2) after 40 days. It is conclusive?

    Kind,

  15. g morning Dr, i had protected vaginal sex with a girl with unprotected oral for less than 1mn, then our organs rubbed to each others. i tested negative for duo test (p24 ag/ab hiv 1+2) 40d post exposure. is it conclusive?

    • Hi franco,

      Yes the Duo test at 40 days exposure can be deemed to be conclusive.

      rgds

      Dr Tan

  16. sorry for sending several replies. its a connection thing, i thought none of my comments reached your site.

    sorry for any inconvenience.

  17. Dear Dr Tan,

    I received unprotected oral and had protected sex with a prostitute. After 2-3 days got severe night sweats but was not stressed. Now its been 5 weeks and i still have them. also started getting joint/muscle pain since 10 days. have had diarrhea. tested negative on duo after 20, 24, 28, and 36 days. should i be worried about hiv? please help me. what other disease or std could be causing this? thank youvery much

    • Hi KK1982,

      Your tests are conclusive of the fact that you do not have HIV. I cannot comment on the possible causes of your symptoms. For that you should see a doctor.

      rgds

      Dr Tan

  18. Dear Doctor,

    I took the duo test at 20, 25, 28, and 37 days post exposure. all negative. my exposure was receiving oral and vaginal protected sex with csw. after 2-3 days i got drenching night sweats even tho i wasnt anxious. have had them for 5 weeks now. in addition now i have severe joint/muscle pain, sometimes headaches, diarrhea and mild fevers. can you please tell me if it’s possible that i have hiv? how accurate are the tests i took? if not hiv then what else? i dont believe in such coincidence. i beg you to please help me. thank you

    • Hi krik,

      The tests you took are extremely accurate. I would go so far as to say they are conclusive. You do not have HIV. I cannot tell you what caused your symptoms. For that you need to see a doctor.

      rgds

      Dr Tan

      • Dear Dr. Thank you so much for your reply. so kind of you. so would you go so far and say there is no chance i got hiv? are there many diseases that can cause these symptoms? can other stds cause this? i am worried because what if the girl had some cut in her mouth? the coincidence makes me so suspicious. is it possible for symptoms such as night sweats to show up in 3 days? do i need further testing? should i take a pcr test? thank you

  19. Dear Dr. Thank you so much for your reply. so kind of you. so would you go so far and say there is no chance i got hiv? are there many diseases that can cause these symptoms? can other stds cause this? i am worried because what if the girl had some cut in her mouth? the coincidence makes me so suspicious. is it possible for symptoms such as night sweats to show up in 3 days? do i need further testing? should i take a pcr test? thank you
    im sorry i think i may be double posting due to my inexperience with this website. if i do then i apologize

    • Hi krik,

      Yes. I am saying there is no chance you have HIV. You do not need further testing for HIV. As for your symptoms, you should see a doctor and figure them out. This forum is really not the platform for medical consultations. No problems with the double posting. The new forum should sort out these issues.

      rgds

      Dr Tan

  20. Dear Dr. Thank you so much. This is my final question regarding testing, i promise. Some websites say that if somebody shows symptoms such as night sweats, joint pain, muscle pain, fevers at 4-5 weeks when they test then they are encouraged to retest. I still have all these. Do symptoms mean antibody production? or is there a risk that if these symptoms are there then there is a risk of false negative? i tested at week 3,4,5 during the symptoms. I beg you for your answer this one last time and I promise I wont bother you anymore. Thank you so much in advance.

    • Hi krik,

      Antibody production can be caused by symptoms but not always. The presence or absence of symptoms do not affect the accuracy of the tests.

      rgds

      Dr Tan

  21. hello Dr,

    is there a chance of witnessing one symptom (white spot at the end of the tongue that can be removed with a toothbrush)after 2 months from exposure.
    NB: i tested negative with duo test after 39 days from last exposure.
    Warm regards,

    • Hi Sukar,

      You do not have HIV. See a doctor and find out what is causing the white spot on your tongue.

      rgds

      Dr Tan

  22. Hi Dr,

    happy new year.

    regards,

  23. Hi Dr,
    Wish u a great upcoming year :)

    Regards,

    • Hi Franco,

      Thank you. I wish you and your family a very healthy and happy 2012 and many more years of the same.

      rgds

      Dr Tan

  24. hi Dr Tan
    I had unprotected oral sex with a transsexual sex worker exactly one week ago. She told me her last test was negative but as shi is an escort, the chances are still high. The last test I had was negative and since then I had not had any vaginal or anal intercourse till last week. I am extremely worried because I shaved my pubic hair before having oral sex and there were small cuts on my groin and scrotum. 2 hours later, there was no visible blood and I had unprotected oral sex and we had body and skin contact and she even ejaculated when we were rubbing. Her semen were in contact with my belly button and groin area and on my penis as well. Are the chances of contracting HIV high due to that occurance? I’m looking to get tested asap. How soon should i get tested?

    • And I rubbed my penis against her bottom and ejaculated on her back. That’s pretty much what we did. Body contact and receiving and giving oral sex

    • Hi worried,

      The most worrying thing here is not the unprotected oral sex but the fact that his/her semen came into contact with your penis. The risk is still however not high. You have many testing options, RNA PCR at 10 days, P24 Ag/Ab at 28 days or HIV Antibody at 1 month and 3 months.

      rgds

      Dr Tan

      • Does the cuts around my penis make the risks higher? Whats your best advice on the steps that I should take? RNA PCR at 10 days o wait for the 28 days? And within the 28 days should I look out for symptoms? Currently, I think I have a sore throat and abit more phlegm than usual. Other than that is more of paranoia setting in which makes me think that I have fever,rashes and the other early symptoms of HIV.

        • Hi worried,

          No. It really depends on if you think spending the extra money is worth it. There is no right or wrong as long as you get tested. You should not look out for symptoms.

          rgds

          Dr Tan

  25. Happy New Year Doc,
    I would like to believe that I had and exposure.For whatever reason I did the ‘head’, in and out one time only but lived to regret. No ejaculation perhaps precum. I did an ECLIA Hiv 1 and 2 Ab/Ag at least 12 days min after the ‘exposure’, but definitely less three weeks. Result Negative. And all other results came back clean too. And I did the Nexus HIV 1 and HIV 2 Rapid test at home after week 7 also with negative result. What bothers me a lot is on week six I started to develop sore throat and eventually cough and this persisted until now two weeks later, albeit I am recovering from it. I was also having slight fever 37.1 C there about and feeling cold and dehydrated most of the time. Do I need further test to see if I am HIV free and is the test that I did was too premature? The symptoms I am having are HIV related by any chance? Am totally worried though it turned out good as I lost my appetite worrying about this whole episode too much and losing 2kg already.
    Thanks Doc

    • Hi Unsureman,

      Happy New Year. Nice nik btw, sounds like a superhero name. Yes you need to do another HIV test. And this time please get it done at a clinic. Your first test was too early and your 2nd test I do not trust simply because its a home test kit. I am so tired about commenting on symptoms. Most everyone writes in with a whole laundry list of symptoms expecting me to tell them if its due to HIV or not. The fact is nobody knows. For my view on so-called ‘HIV symptoms’ please read: http://www.drtanandpartners.com/hiv-symptoms-%e2%80%93-early-symptoms-of-hiv/. You should see your doctor to find out what is causing your symptoms.

      rgds

      Dr Tan

  26. Hi Dr. Tan,

    I have found this from CDC website:http://www.cdc.gov/hiv/

    Hope this could be a good news if everything goes fine accordingly.

    UNITED STATES; CANADA: Human Clinical Trials of HIV Vaccine to Start in January
    Wed, 21 Dec 2011 – http://www.canada.com/edmontonjournal

    Canadian researchers announced on Dec. 20 that a Phase I trial of a vaccine to prevent HIV infection is set to launch in January. The experimental vaccine has been manufactured in the United States, and the research team – led by Dr. Chil-Yong Kang, a virologist at the University of Western Ontario – recently received US Food and Drug Administration approval to begin human trials. The vaccine is unique in that it uses dead HIV-1 virus, an approach similar to that used for polio and influenza vaccines. The virus is genetically engineered not to cause HIV. Preliminary toxicology tests on animals did not show any adverse effects or safety concerns with the vaccine, called SAV001, and it can be produced in large quantities, Kang said. “So we infect the cells with a virus and then the infected cells will produce lots of virus and we can collect them, purify them and then inactive them,” Kang said. The Phase I safety trial will involve 40 HIV-positive individuals; it should take six months to complete and a year to evaluate results, Kang said. If the vaccine candidate proves safe, Phase II would be conducted with about 600 HIV-negative high-risk individuals to measure immune system responses. If it advances further, a Phase III trial involving about 6,000 HIV-negative high-risk people would test the vaccine’s efficacy using a vaccinated group and a non-vaccinated control group. Dosing schedules would be another variable to evaluate. It could take about five years for the vaccine to reach the market, Kang said.

    • Hi JK,

      Thank you for sharing. Yes, I believe we will find a vaccine way before we find a cure.

      rgds

      Dr Tan

  27. Unsureman

    Thank you Dr Tan.
    But after 7 weeks of potential exposure, what test can I do immediately and will there be more follow up test needed to be done rather than to wait for the 3 months period which is rather petrifying.
    Many thanks.

    • Hi Unsureman,

      Cannot recall details of the case. Please recap thanks.

      rgds

      Dr Tan

  28. Unsureman

    Dr Tan,
    To add to the question. So the ECLIA Hiv 1 and 2 Ab/Ag test I did earlier means I am free of HIV all this while but my latest encounter need to be further confirm if this is status quo or not. Am I right here to say this then?
    Many thanks again.

  29. Soworry

    Hi Dr Tan,

    I am homosexual and I had unprotected sex with a man back in September 2009. 3 weeks later I had Syphillis and was successfully cured in March 2010. I did the blood test as well and it was negative.

    Until 2 months ago I started to notice I had genital warts around my anus so I went to see doctor again and did the blood test again with ECLIA Hiv 1 and 2 Ab/Ag. The result shows positive.

    Gribbles recommended me to do the test another round with Western Blot. And so I did it and now i am waiting for the report.

    Do you think I should still hope for miracle that the test was inaccurate?

    • Hi Soworry,

      The fact is only a Western Blot can confirm a HIV infection. There is a chance the ECLIA test was falsely positive although the chance of this is not high. You really need to plan for the situation that you really are infected with HIV.

      rgds

      Dr Tan

  30. Good morning Dr,

    have u ever seen someone tested negative with Duo test at 5 weeks that turning positive later?
    can i move on with my life?

    thank u

    • Hi Sukar,

      No I have not. Whether or not you can move on is really a question you should put to your doctor.

      rgds

      Dr Tan

      • in your opinion, a duo test at 5 weeks is deemed to be conclusive right?

        • Hi Sukar,

          You are obviously looking for a closure that I am unable to give. In my opinion it is conclusive. However, please remember that I am not your attending physician. My opinion does not count. You should not act on it. Please confirm this with your doctor.

          rgds

          Dr Tan

          • hello dr,

            is it likely that someone shows one only symptom after 3 months (white patch end of the tongue)& already did a combo test after 28d post exposure (negative)

            regards,

          • Hi thomas,

            If you do not have HIV then you do not have HIV. There is really no point in jumping at every ‘symptom’. There are many causes of white patches on the tongue. You should ask your doctor or dentist and not assume everything is due to HIV.

            rgds

            Dr Tan

  31. Hi dr.
    I have done hiv combo test at 5.5 weeks and the result was negative. Can it be considered as conclusive? Shoud i retest? What’s ur opinion?

    Thank u

    • Hi
      I have done hiv combo test at 5.5 weeks and the result was negative. Can it be considered as conclusive? Shoud i retest? What’s ur opinion?

      Thank u

      • Hi Ringo,

        In my opinon it is conclusive and you do not require a retest.

        rgds

        Dr Tan

    • Hi Ringo,

      Conclusive. No need retest.

      rgds

      Dr Tan

  32. 陳醫師你好:

    因為我的英文能力不好,所以需要以中文向您提問

    我的狀況如下:

    1.我在2011/11/26號,有與一位泰國女子危險性交,僅放入約5~10秒(感覺對方陰道裡面很乾燥),之後將手指伸入女方陰道指交,直到對方陰道有大量分泌物,之後戴上套子完成性交。

    2 我在2011/12/6 ,與另一名泰國女子有帶保險套性交,但我是一個毛囊炎患者,在屁股,以及性器官的上方(恥毛處)有大量毛囊炎傷口,如果對方的陰道分泌物大量的流在毛囊炎的部位,會有可能得到hiv嗎?

    最後補充

    我個人在12/10號,在泰國康明醫院檢驗,陰性。

    第一名泰國女子在12/31,CMIA檢驗,陰性。

    第二名泰國女子在2012/1/2,Ela陰性。

    我又在1/4,非康明醫院,抗體檢查,陰性。

    請問,我還需要三個月去複檢嗎?? 我是否已經排除了危機呢??

    非常感謝醫生你的協助

    祝你新年快樂,萬事如意!

    • Hi OMG,

      I’ll reply your question as soon as I can get the Chinese Characters working on my keyboard.

      rgds

      Dr Tan

  33. Happy new year :)

    • Hi Ringo,

      Happy and Healthy New Year to you too.

      rgds

      Dr Tan

      • Hi Dr Tan,

        Had unprotected vaginal with csw on 26/11. Had Duo test on 21/12 and Elisa on 26/12. Both negative. In your opinion are these conclusive? Also Hbs ag both negative. Are these conclusive.
        Thanks

  34. Worried

    Hi Dr Tan,

    I previously did a finger prick test(i think it is hiv antibody test) at your clinic 30 days from my previous exposure. It came out to be negative.

    Also, I did my ORD FFI where they draw a tube of blood 12 days prior to my exposure. I do know they are going to do a HIV screening but I have no idea what method they used. I was cleared today medically after I did a urine test too (Was told to urinate on a strip of plastic with different colour boxes attached on it). It about the 40th day today.

    Does this mean I am free from HIV and STD? Or do I still have to return 90days from my exposure to test again? Is there any test I can carry out now to confirm my negativity.

    Thanks!

    • Hi Worried,

      If you are within 6 weeks from exposure you can undergo the P24 Ag/Ab Combo test. If not you can wait till 3 months post exposure and get another antibody test done. I do not see you mentioning that you had any STD tests done (the army urine test does not count) so I am unable to say whether you are free of STDs or not.

      rgds

      Dr Tan

  35. Dr Tan, I did a rapid test (Hiv 1 and 2 test WB/S – on the packet says whatever it means) in a clinic after 8 weeks of potential exposure – a brief oral sex on a man without ejaculation. Result is negative but is this test good enough and should do more test or other test at all?

    • Hi rambu,

      I am not familiar with the rapid test you did therefore I cannot comment on its accuracy at 8 weeks. I suggest you ask the doctor who conducted the test for you. You should also screen for Syphilis and Throat Gonorrhea.

      rgds

      Dr Tan

  36. hello doctor

    I did a p24 combo test at 21days and 27days.both turn out to be negative. is it conclusive? should i retake the test again? at 27days is it 99% accuracy?

  37. Good Morning Dr Tan,

    I had protected sex with a sex worker for less than 5 minutes without ejaculation. However, after that, I realized that my condom was not on. Lets say that it came off halfway through, what are my chances of getting HIV? She said she was clean when I asked her after. If she was clean, would my chances be much lower than if she wasn’t? The incident occurred on 29th December 2011. I am thinking of doing the Duo Test at 28D exposure. Would you recommend that? Also, will your clinic@robertson be open on 26th January 2012? What should I take note of before coming?

    Thanks a lot!

    • Hi Kook,

      Assuming the woman was HIV positive, your chance of contracting HIV from her would be in the region of 0.1% to 0.01%. That said, you should still screen for HIV and other STDs. Doing a DUO test at 28 days post exposure will be conclusive. On 26th Jan the clinic will be open the whole day but I will be in the clinic only in the evening.

      rgds

      Dr Tan

      • had a duo ag/ab hiv test 42 days post exposure ,6 weeks,health worker said i dont need to go back for 3 month,low risk
        is this conclusive,im on anti depressents and diazpam,
        could my stress cause me to have spots e.t.c.
        i had pain during sex with this woman at end,dunno if someone put a needle in me,maybe im just losing my mind,
        please help

  38. hello doctor. i did a p24 combo test at 21days and 27days. both turn out to be negative.is it conclusive? do i need to retake the test again? sry to disturb you again. is there any possibility to generate false negative?

  39. hello doctor. i did a p24 combo test at 21days and 27days. both turn out to be negative.is it conclusive? do i need to retake the test again? sry to disturb you again. is there any possibility to generate false negative??

  40. Worried like hell

    Dear Dr. Tan,
    I am really stressed out and more or less living in hell. I am a male, aged 35 from Dubai. I had protected vaginal sex with a csw for around 10 minutes. The condom was intact and not broken.
    I did a PCR RNA test after 6 days and the result was negative. Furthermore, I did a P24 antigen test and antibody test (DUO) after 29 days and the result was negative. Finally, after 40 days, I did the ELISA test for my work visa at the ministry of health. The result was negative. All the doctors who did the test for me told me that I should stop worrying and consider the results as conclusive. However I can’t stop worrying. I have seen your site and understand that you are an expert in this matter and would like to get an answer from you. I started having sex with my wife after getting confirmation from the doctor and now I am worried about her health as well. Am I safe? Do I need to do any more tests? I had some fever, sore throat, around 5-10 blisters (like one in the hand, two in the right thigh, two in the left thigh etc). No other symptons. I also tested for all other STDs after 30 days and all results were negative. I am scheduled to be in Singapore by the end of this month in case I need to do a test at your clinic. My problem is that I am too scared to do another test. Please advise. Thanks and regards from Dubai. Akhilesh

    • Hi Worried like hell,

      Greetings from Singapore to Dubai. There is no need to do another HIV test. I agree with your doctors that your tests are enough to conclude that you do not have HIV. You should see your doctor about those blisters.

      rgds

      Dr Tan

      • Worried like hell

        Thank you Dr. Tan. Well appreciated.
        I have the following questions.
        1. May I ask you if you have confirmed that I don’t need another test based on the 41st day test or the 30th day test or all of them put together?
        2. Is continuous bitterness in the mouth (for almost three weeks now) has anything to do with any STD? I feel bitterness in between meals.
        3. Do you think my wife needs to be tested?
        4. Please note that the DUO test was actually a p24 antigen test and an antibody test done on the same day on the same blood sample on the 30th day of exposure. It was done separately. Does that change anything? The pathologist has confirmed that there was neither p24 antigen nor antibody in the blood on the 29th day. Is she right?
        5. Is there any test that can be done between the 71st day to the 80th day which is confirmatory/conclusive in which case my wife can do the test in your clinic? We will be in Singapore in the first week of February.
        Thanks and regards
        Akhilesh

        • Hi Worried like hell,

          1. What difference does it make? 2. No. 3. Cannot comment. 4. Does not change anything. I am not going to comment on whether another doctor is right or not. 5. You can do a rapid 3rd Gen HIV antibody test.

          rgds

          Dr Tan

          • Worried like hell

            Thank you Dr. Tan. I sincerely appreciate your efforts and good work. I am now convinced that I don’t have HIV. However, I would drop and see you when I come to Singapore next month. Once again, thank you for the tremendous work you are doing. Your confirmation has cemeted my belief that I am free from the deadly virus. Best regards from Dubai. By the way, Singapore is my favorite city and I love spending time there. Akhilesh

  41. Dear Doctor,
    Is a 8 week duo negative conclusive please? what is the risk of a false positive pcr test? thanks

    • Hi krisk82,

      There is really no point doing a DUO test at 8 weeks. An antibdoy test will do. If the antibody component in your DUO test is 3rd gen then yes it is conclusive. Rather high. Unable to quote a statistical figure.

      rgds

      Dr Tan

  42. StressfulDL

    Hi dr tan, my exposure was at 31st oct 2011,protective virginal sex, unprotective oral sex . I had HIV rapid blood test at dsc at 4th week- negative, HIV rapid blood test at your clinic at 7th week -negative, HIV rapid blood test at your clinic at 9th week-negative. I plan to do a final HIV rapid blood test at 01/02/2012 which is post 3 month. But I would like to do the comprehensive std test. May I know when is the best time to do based on my exposure ? And how long it will take to wait for the result? Thanks

    • Hi StressfulDL,

      The best time for you to do a comprehensive test is 3 months post exposure. This is really for your convenience so that you do not have to make mutiple trips donw. The turnaround time for results is about 1 week.

      rgds

      Dr Tan

    • StressfulDL

      Hi Dr Tan,

      If I wish to do the Anonymous HIV Testing together with the std comprehensive test at my post 3 month which is 01/02/2012 , How should proceed to ask the counter? walk-in register or just say do 3 step test? What else i need to prepare ?

      • Hi StressfulDL,

        Just walk in and register. For STD screening do not pass urine 4 hours prior to screening.

        rgds

        Dr Tan

        • StressfulDL

          Hi dr tan, my exposure was at 31st oct 2011,protective virginal sex, unprotective oral sex . I had HIV rapid blood test at dsc at 4th week- negative, HIV rapid blood test at your clinic at 7th week -negative, HIV rapid blood test at your clinic at 9th week-negative. I plan to do a final HIV rapid blood test at 01/02/2012 which is post 3 month. Just want to check is mt test result conclusive that i do not have HIV or I need to wat for the post 3 month test?

          • Hi StressfulDL,

            As far as I am concerned you do not have HIV. MOH will want you to retest at 3 months.

            rgds

            Dr Tan

  43. Sunny Lee

    Hello Dr Tan,
    Great day to you.

    I finally found out in Malaysia, there’s a Lab (Clinipath) that confirms they perform HIV Ag/Ab Combo Test. I have few questions here:

    1. You mentioned before that this test is best to be taken at 4 weeks post exposure. However, now since my post exposure, it has been more than 4 weeks. 8 weeks to be exact. And, Clinipath doesn’t conduct any other HIV test than this. This is the only HIV test that they perform. My doctor asked me to wait for 12 weeks before taking this test. The question is, if I take this test at 12 weeks, is it accurate and conclusive?

    2. I would assume this HIV Ag/Ab Combo test is a combination of both Antigen and Antibody test, right? Antigen will be peak at 4 weeks and by right testing at 12 weeks, the antibody test will able to pick up where antigen test might not be that accurate?

    3. When we talk about HIV Ag/Ab Combo Test or Duo test, they all mean the same? Having said so, they are all produced by the same manufacturer? Are there any different manufacturers for this test? I read somewhere this test is produced by Abbott. Is there any other manufacturer for this test other than Abbott?

    Dr.Tan, I really wish there would be more doctors in Malaysia like you. You see, many doctors here are not even aware of this test. They still very much stick to the antibody test that will need at least 12 weeks. One doctor even asked me to keep on testing every 3 months for 2 years!
    What’s your opinion on this windows period different definition by different doctors? Are they simply outdated? Or there might be some truth in them? Just for your information, I have met with 4 doctors. And, these are their advices assuming the results are all negative:
    Doctor Number 1: Test at 12 weeks. Conclusive.
    Doctor Number 2: Test at 12, 24 weeks. Conclusive.
    Doctor Number 3: Test every 3 months for a year. Conclusive.
    Doctor Number 4: Test every 3 months for 2 years. Conclusive.

    I’m getting confused. Perhaps, you can help, Dr. Tan before these doctors confused me even further.

    Thank you very much, Dr. Tan. God bless you.

    • Hi Sunny Lee,

      1. It really depends on what brand of combo test they are using. Generally I would say yes it is conclusive at 12 weeks. 2. Yes you are right on both points. 3. There are many brands andmanufacturers. Recommendations on window period depends on the tests available. So I am really unable to comment on your doctors’ advice. I can only talk about my personal practice. I know what tests I do so I know what testing window period to recommend my patients.

      rgds

      Dr Tan

  44. Very much Depressed

    Dear Dr Tan,

    Greeting from Kuwait and a happy new year.
    I am very much depressed and need your kind help. My story is short is i did a un-protected vignal sex with a sex worker here after heavy drinking, no oral or anal. I did ag/ab combo 4th generation test on day 20, its cobas 6000. Then i repeat test on day 28 and again i repeat test on day 54 (7 weeks and 4 days) all duo test (4th generations).. i though its conclusive but then after this test i had flu for one week and again for one week after a week break at week 8 and 10.
    Furthermore i have small bean size node on neck and more over it now a have rash type whitish lines on both sides on the cheeks inside the mouth. These lines i think are exactly on the place where upper and lower teeth meet and feeling a sore throat again by this week. All these symptoms are killing me. I cant go to hosptal and tell the truth and ask for gp help as in this case they will cancel my work permit as sex with sex worker here is illegal. The test result here comes afer 2 days and you can imagine that 2-3 days waiting of result is like killing and its very long so i am afraid to have another test.
    Besides these symtptoms, i dont have fever or any rash on body, and as i am high chealestrol problem so loosing weight and do go for jogging every day of about 8 to 10 km jogging every day which i am doing every day and loosing weight due to this. There is no other syptoms.
    Now this is whole story and facts i just want your kind guidliens that 1) Is my tests are 100 % conclusive/correct 2) Should i repeat the test again at day 90 (3 months) or 84 (12 weeks)..3) If no test needed then can i have unprotected sex with my wife as she dont like condom. 5) What you say about my symptoms.. 6) Whats your final assessment.

    Dr. tan i am very very sorry to have this long email but you can understand that i am like hell now as cant even disucss any thing with any body here.

    I am awaiting for oyur kind reply.God Bless you and Happy coming Lunar New Year.

    Rgds,

    Depressed

  45. Very much Depressed

    Dear Dr. Tan,

    Further to my above email, just want to add that i feel pain in neck also and musle pain mainly in chest. I am a smooker also with a 20 cingrates per day. Just an ad on information.

    Awaiying for your kind reply.

    Rgds,

    Depressed

  46. Hi doctor !how reliable are rapid combo tests taken at your clinic four weeks after potential exposure ?
    Regards

    • Hi dsh,

      As far as I am concerned 100% accurate.

      rgds

      Dr Tan

      • By rapid test I meant Alere Determine 1/2 Ag/Ab combo
        test. Are these tests conclusive after 4 weeks ?
        Regards and thanks

        • Hi dsh,

          Yes it is.

          rgds

          Dr Tan

          • Sorry for my bad english,dear Doctor! I meant not after four weeks but at four weeks past exposure. I wonder if Alere Determine 1/2 Ag/Ab combo can be considered as conclusive at four weeks ? As far as I understand it can be since it tests for both antibodies that are usually produced between 2-3 weeks after exposure as well as for hiv p24 protein that it is highest level four weeks after exposure. Thank you very much for your time and care.

          • Hi dsh,

            Yes it is conclusive at 4 weeks.

            rgds

            Dr Tan

          • Dear Dr.Tan !
            Thank you very much for your answers. I admire your energy and dedication to your profession, I wish all the best !

  47. Dear Doctor,
    Thank you for your wonderful website. I am curious if the rapid combo tests are as accurate as those combo tests that are sent to lab.
    Regards

    • Hi Dimi,

      It really depends on what kind of tests the labd performs. However, I am confident that the rapid combo tests are just as accurate if not more accurate than the lab based ones.

      rgds

      Dr Tan

  48. Dear Dr.Tan!
    I am a 30 y.o. man from Russia, who stupidly had an exposure with the CSW being intoxicated (accidently mixed alcohol and anti-allergy pill). I remmember asking her for the condom and than taking it off several hours after our “meeting”. But i am not sure when exactly was this condom put on me. So, i assume there is a slim possibility we had some unprotected vaginal sex.
    I got tested at 32 days with Abbot Combo test ag/ab negative in one of the best Moscow labs. Had no symptoms but can say i am nervous as i am planning a baby in summer so this episode wont get out of my had.
    Unfortunately guidline in Russia say you must be tested untill a year efter exposure, so, understanding that a 4th generation test in good at 32 days with my head I can not still be calm due to that guidelines. Would you please help me calm down and say i ca relax with my negative 32 days DUO test? I really appreciate your help and really upset I have to search advice outside my country.

    • Hi Soviet,

      Greetings to Russia from Singapore. I am very familiar with the Abbott Combo test and use it very frequently for my patients. I have never seen it miss a HIV diagnosis at 4 to 6 weeks post exposure. If I conducted the test for you at 32 days post exposure, I would unequivocally tell you that you do not have HIV and to stop worrying. I really enjoy seeing posts from all over the world on this site. I hope this reply makes you feel better.

      rgds

      Dr Tan

      • Dear mr. Tan!
        You helped me more than a lot! Personally, i made a huge research on the net on that matter, but getting a personal reply from a highly qualified doctor is priceless! Thank you again wish you all the best!

  49. hidr,
    i had unprotected vaginal sex with a girl. I tested negative for duo test (hiv I & II Ab/Ag (ELFA)) after 41 days. It is conclusive?

  50. blue bear

    Hi Dr.

    Excuse for my poor english. I had a risky intercourse (oral unprotected sex and protected vaginal sex) I did a Duo Combo (Antigen p24+elisa) at an authorized and well respected lab here in my country (a clinic specialized in vih and std test). Mi test was negativa at 30 days post the related intercourse, do yo think that will be conclusive?, or do you think is necessary a 42th day test.

    Thanks, and congrats for all your efforts.

    Salutes from Guatemala, Central America

    • Hi blue bear,

      Greetings to Guatemala from Singapore. You must be the first person to write in from Guatemala. A Duo test at 30 days post exposure is conclusive. Please stop worrying about HIV. Your English is perfectly understandable.

      rgds

      Dr Tan

      • blue bear

        Thanks a lot Dr. Tan
        You do an excellent work.

        If sometimes you come to visit Guatemala, you already have a friend here.

        Again, thanks

        • Hi blue bear,

          Thank you very much for the offer. I also wish I can visit your country soon. It looks so scenic on the internet pictures.

          rgds

          Dr Tan

  51. Hi there I am from Canada, I have done testing for hiv 1 and hiv2 which have come back negative everytime. While in Europe I did another test to make sure once again while there I was informed about the third virus, now I am scared as I haven’t done the testing for the third and doctors here can not inform me properly if the strain can be detected by their machines. I am not sure if it is because I am asking the wrong questions on the strain as I say the simian virus….. after researching I saw there is AE-B an M,N,O,P as the new strains…..I am not sure which is the new strain that was found in sigapore and camaroon but would like to know how to get the testing done on this side of the world or how to send it out somewhere for testing…..I need answers quickly please thank-you for your time

    • Hi canada,

      You have really confused yourself. There are only 2 types of HIV. HIV is then further classified into groups and subtypes. AE-B is what we call a circulating recombinant form that is a combination of different subtypes. Sometimes HIV test reports show tests for HIV 1/0/2. This is actually an erroneous way of reporting. There is no such thing as a 3rd type of HIV. Testing for HIV 1 and 2 will cover all the groups and subtypes. For more info please read: http://www.drtanandpartners.com/all-about-hiv-types-subtypes-groups-and-strains/

      rgds

      Dr Tan

  52. Help me please I have done the testing for hiv 1&2 and I am scared because I don’t know where to get the testing done for the third! 1&2 came back negative and now I just want to find out about the 3rd new version please and thank you

    • Hi canada,

      I do not know what you mean by the ‘3rd new version’. If you mean HIV-3 there is no such thing.

      rgds

      Dr Tan

  53. Hi there could you please instruct me where I can get the test done please and thanks for the third generation

  54. StressfulDL

    Hi dr tan, my exposure was at 31st oct 2011,protective virginal sex, unprotective oral sex . I had HIV rapid blood test at dsc at 4th week- negative, HIV rapid blood test at your clinic at 7th week -negative, HIV rapid blood test at your clinic at 9th week-negative. I plan to do a HIV rapid test tomorrow which is 87 day , 12 week and 3 days though I suppose to go for a ful body check up on saturday 28 th jan 2011 which include a HIV blood lab test (90th day) If my test is negative tmr again , can I say I am conclusively do not have HIV n and have meet MOH guideline for testing HIV ? And also is rapid test is negative ,will my lab test turn positive ? Sorry I am truly troubled and stress . Hope you can help me ! I afraid I am those who are late to produce HIV antibody. Is my counting of day post exposure correct? Sorry for so much question.

    • Hi StressfulDL,

      There is no doubt that you do not have HIV. I really do not see why you are so worried. How many tests will it take to convince you that you are free of HIV?

      rgds

      Dr Tan

  55. hallo dr tan
    my test :::
    p24 combo at 14 day NEG
    p24 combo at 34 day NEG
    ANTIBodys (Elisa) at 44 day NEG
    p24 combo at 48 day NEG
    p24 combo at 54 day NEG

    q: am i free from hiv ?
    q; do i need any future test?
    manythanx to you Dr.Tan and godbless you

  56. Hi Dr Tan,

    I’m from Australia and sorry if I sound really stupid but I need help.

    I went to an erotic massage parlor 40 days ago that I frequently visit and had a rub n tug service. Was wearing the condom all the time, had oral, body to body slides and that’s about it. I had my upper body shaven and I remember the woman rubbed her clit which I stopped forcibly then she started rubbing her fingers on my body for a while (which is a worry for me now in retrospect as i might have had microscopic cuts ).That’s the summary!

    Afterwards a couple of days later I started feeling that my system is under attack (the sick feeling) and it remained within my body for weeks (flu initiating symptoms) and then from the 2nd week i got an itch near my anus which I scratched and wounded.I’ve got a similar blister near my groin area.Wounds have got healed slightly.Mild flu symptoms started getting worsened(hardly any external temperature) with swollen glands in my throat with sore throat, joint pains, muscle twitching etc.I get exhausted very easily and it’s unexplainable. My throat glands have been swollen for a long time. I tested within 3.5 weeks and it’s negative. They couldn’t find any other disease like Mono as well. From the 3rd week I have started getting mild night sweating almost every night. My eyesight has got blurred (more like short shortsightedness) from the 4th week. Doctors have been saying there’s no way I could have contracted the disease but these symptoms are still haunting me. Almost everyone who hears my story laughs and makes fun of me but why are these symptoms? Flu symptoms without temperature ,sore throat, swollen glands,tiredness, blurry eyes when looking far mild night sweating, itch n blister in my groin and near anus? I have hardly got any flem and my throat is very dry .No mucus as well! I recently started getting the infection to my lungs, with lung pains and ocassional dry coughs. Did an Xray it looks normal.

    I cannot wait for 3 months and i’m looking forward to do any advanced tests. I did Hiv Ag/Ab combo test in 33 days and it’s negative. But these mysterious symptoms still worry me. Doctors still haven’t diagnosed my issue.

    Please someone guide me!

    Thank you everyone!

  57. Hi Dr Tan,

    Btw I couldn’t mention that during my last test I was under Cephalexin capsules as an antibiotics and does that have any chances of giving wrong results?

    Thanks

  58. Dear Doctor!
    I would like to know your opinion about this article
    http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3222669/#pone.0028019-US1
    Do they suggest that rapid combo tests work poorly ? However, I could not understand at which time frame they used the tests .
    Regards,
    SWE

    • Hi SWE,

      I quickly glanced through the article. I really have no time to read it in detail as I am on military training right now. It seems to me that the criteria for inclusion in this study was a negative HIV test 3 months ago and a high risk encounter in the past 3 months. We must remember that the P24 has a very strict and narrow window period of between 3 to 6 weeks. It could be that the patients tested were outside this window. Anyway, the conclusion of the study was that there was no additional benefit of the P24 at 3 months testing. We know that already.

      rgds

      Dr Tan

      • Dear Doctor Tan,
        Thank you very much for your answer and your time to look through the article. The thing was that I tested negatively with a rapid Determine™ HIV-1/2 Ag/Ab Combo Test at 27 days past exposure. I wonder if this result can be considered as conslusive ?The doctor in Stockholm told me that I do not need to worry and take it as a conclusive despite that the official swedish guideline is a three month post exposure antibody test . I would like to know your opinion on this matter ? Can I take this results as a conclusive ?
        Regards and big thanks, SWE

        • Hi SWE,

          I completely agree with your doctor. I also am of the opinion that it is conclusive.

          rgds

          Dr Tan

  59. Hello Dr Tan,

    Wish you a very happy new year. First of all, I know it’s not possible for you to provide a conclusion, but I’m after an opinion and some guidance based on a certain incident and post symptoms.

    Background of the incident:

    I’m from Melbourne, Australia. I had an erotic massage 40 Days ago at a licensed parlour and had protected Oral sex and body to body slides. At one Stage the woman rubbed her clitoris which I had to stop but she continued rubbing her fingers hard on by body. I had shaven upper body and some parts. Are there any chances of getting the virus from her body fluids via microscopic cuts presented in my body? I know it’s a tough question to answer. Only other time she made contact with my penis was when she changed my condoms.

    Symptoms:
    From the following day I started getting flu symptoms, joint pains and the feeling you get when you’re about to fall sick. By the end of the first week, I started to get the unexplainable exhausted feeling. From the 3rd week onwards my throat glands got infected and got swollen a bit. Mild Gland infected pain is still there (this is the 6th week).By the mid of the 3rd week started getting small fungus near my groin area and near the anus for which I’ve been treated by some cream.Did the Hiv Ag/Ab test and screened for all other STDs by 3.5 weeks (24 Days)and were negative.Only abnormality of my blood report was my thyroid hormone level was relatively high.I consumed some herbal drinks which I generally use when I’m having a usual flu or cold.

    4th Week onwards I’ve been getting regular night sweats and recently my lungs got infected with a dry cough.Did an Xray and doctors say it’s normal and cannot distinguish any issues.My far vision got blurred. I was prescribed cephalexin (Keflex) antibiotics and I had those for a couple of days. In the meantime I repeated the Hiv Ag/Ab test on 33 days post exposure and I was still on antibiotics. It was negative. I was wondering if antibiotics or any other herbal drinks I had in previous weeks gave false results.

    Finally from yesterday (It’s not almost 6 weeks) I’m having a urine infection along with other symptoms.My gland and lung infection pains are not consistent. It’s pretty much on and off. But the exhausted feeling persists.I observed a slight whitish coating at the left corner of my tongue. All these symptoms are driving me crazy and I’ve been absolutely devastated.

    I really appreciate your hard work in providing guidance to people like us and would be extremely grateful to see a couple of words as an opinion/guidance from you.Doctors over here have been telling me the risk was absolutely negligible in contracting the disease but these symptoms for which even doctors have no clue are driving me crazy.I’ve reached a stage to get counselling from psychiatric.

    Thank you and GOD Bless you Doctor!

    • Hi thiansz,

      Greetings to Melbourne from Singapore. This is a repeat post. Please refer to your later post for my reply. Apologies for the delayed reply. We have been having website hosting issues.

      rgds

      Dr Tan

  60. I’m extremely Sorry Doctor for the repetition of the posts and I reckon I reposted thinking they were not posted.

    Please only refer to my last post

    Apologies again!

  61. Hello..Dr.Tan
    I live in Switzerland. I married with my husband for 3 years but we never been to do H.I.V test. Then I decided to go to check in Aids-Hilfe in Bern,Swiss. I donot remember the name of the test but when I saw the photo on the top of this page it the same and I got result : negative ..
    This test took time only 10 minutes to get the result . Is it possible to be false negative? and for rapid test like this, Had happend to show false negative?
    Regards
    Natty..

    • Hi natty,

      This is a repeat post. Please see your later post for my reply. Apologies for the late reply. We have been having issues with the website hosting.

      rgds

      Dr Tan

  62. hello dr.tan .. I live in switzerland i married with my husband for 3 years ,we never been checked for h.i.v . Then i decided to go aids-hilfe in bern to get test ,i don’t remember the name of the product but that product seem like the the test of photo on the top of this page. I got the result after 10 minutes.the nurse said if your blood run pass 2 first channel then ur fine ,and yes i saw it , after 10 minutes i saw the red line in negative channel, my question is ,Is possible to be false nagative? And can u explain to be how become red line in each channel? If my blood was possitive is possible to run accross 2 first channel and then appear the red line in negative chennel? Thank you.. Natty

    • happy chinese new year dr.^^

      • Hi natty,

        Happy New Yeat to you too. May the Year of the Dragon bring you and your family good health and good fortune.

        rgds

        Dr Tan

    • Hi natty,

      Greetings to Switzerland from Singapore. I assume what you underwent was the Determine HIV Combo test. False negatives are possible if you are within the window period. The red lines in the channels (or Test Windows as we call them) are very obvious if they are there. If the test is negative then you do not have HIV. There is really no reason to doubt it unless you are within the window period.

      rgds

      Dr Tan

  63. Extremely Worried

    Hello Dr Tan,
    Wish you a very happy new year. First of all, I know it’s not possible for you to provide a conclusion, but I’m after an opinion and some guidance based on a certain incident and post symptoms.
    Background of the incident:
    I’m from Melbourne, Australia. I had an erotic massage 40 Days ago at a licensed parlour and had protected Oral sex and body to body slides. At one Stage the woman rubbed her clitoris which I had to stop but she continued rubbing her fingers hard on by body. I had shaven upper body and some parts. Are there any chances of getting the virus from her body fluids via microscopic cuts presented in my body? I know it’s a tough question to answer. Only other time she made contact with my penis was when she changed my condoms.
    Symptoms:
    From the following day I started getting flu symptoms, joint pains and the feeling you get when you’re about to fall sick. By the end of the first week, I started to get the unexplainable exhausted feeling. From the 3rd week onwards my throat glands got infected and got swollen a bit. Mild Gland infected pain is still there (this is the 6th week).By the mid of the 3rd week started getting small fungus near my groin area and near the anus for which I’ve been treated by some cream.Did the Hiv Ag/Ab test and screened for all other STDs by 3.5 weeks (24 Days)and were negative.Only abnormality of my blood report was my thyroid hormone level was relatively high.I consumed some herbal drinks which I generally use when I’m having a usual flu or cold.
    4th Week onwards I’ve been getting regular night sweats and recently my lungs got infected with a dry cough.Did an Xray and doctors say it’s normal and cannot distinguish any issues.My far vision got blurred. I was prescribed cephalexin (Keflex) antibiotics and I had those for a couple of days. In the meantime I repeated the Hiv Ag/Ab test on 33 days post exposure and I was still on antibiotics. It was negative. I was wondering if antibiotics or any other herbal drinks I had in previous weeks gave false results.
    Finally from yesterday (It’s not almost 6 weeks) I’m having a urine infection along with other symptoms.My gland and lung infection pains are not consistent. It’s pretty much on and off. But the exhausted feeling persists.I observed a slight whitish coating at the left corner of my tongue. All these symptoms are driving me crazy and I’ve been absolutely devastated.
    I really appreciate your hard work in providing guidance to people like us and would be extremely grateful to see a couple of words as an opinion/guidance from you.Doctors over here have been telling me the risk was absolutely negligible in contracting the disease but these symptoms for which even doctors have no clue are driving me crazy.I’ve reached a stage to get counselling from psychiatric.
    Thank you and GOD Bless you Doctor!

    • Hi Extremely Worried,

      This is a repeat post. Please see your later post for my reply. I must apologize for the tardiness in replying. We have been having problems with the website hosting and I am away for military training in an area mostly devoid of internet connections.

      rgds

      Dr Tan

  64. Hi Doctor Tan,

    I had the Determine™ HIV-1/2 Ag/Ab Combo Test after 3 months+ exposure. Turns out negative. Is it 100% sure? Must i go for another test? Thanks, i’m still feeling anxious because of this.

    Thanks,
    Bryan

  65. amirmohammad

    hi drtan from iran.i had a sex with a sex worker with condon 5 weeks ago. i use condom but after 1-2 minute finishing i put my underwear and 2-3 minute after it i leave the condom out. is it possible that the seual liquid of her that remain on my underwear and contact to my penis head enter to my body and infect me to hiv?my antibody/antigen test after 19 and 30 days was negative.

    • Hi amirmohammad,

      Greetings to Iran from Singapore. Whether it was safe or not, and Yes it is safe, the fact is you tested negative on the combo test at 30 days post exposure. You do not have HIV.

      rgds

      Dr Tan

  66. amirmohammad

    is it safe?

  67. Hello..Dr.Tan
    I live in Switzerland. I married with my husband for 3 years but we never been to do H.I.V test. Then I decided to go to check in Aids-Hilfe in Bern,Swiss. I donot remember the name of the test but when I saw the photo on the top of this page it the same and I got result : negative ..
    This test took time only 10 minutes to get the result . Is it possible to be false negative? and for rapid test like this, Had happend to show false negative?
    Regards
    Natty..

    • Hi natty,

      False negatives using the HIV Determine by Alere is unheard of. I assume you are already outside the window period.

      Rgds

      Dr Tan

  68. Hello Dr Tan,

    my condom slipped and came out inside my partner vagina and her health status was unknown.. i was very worried since then.. it happned on 29 october 2011 and i did the following test:

    1. 3rd JAN 2012 – ELISA – NEGATIVE
    2. 12 JAN 2012 – HIV Ag/Ab COMBO Screen test – Non-reactive

    please advise if I should do another test or I can move on with above?

    thanks a million..

    regards
    CR

    • Hi CR,

      You can move on.

      Rgds

      Dr Tan

      • Dear Dr Tan,

        thanks and with this can I assume that I am free from HIV?

        thanks and regards,
        CR

        • Hi CR,

          Can’t recall details of case. Please recap thanks.

          rgds

          Dr Tan

          • Dear Dr Tan,

            I had an exposure on 29 Oct 2011 with a sex worker and did the following checks:

            1. 3 Jan 2012 – Elisa Test – Negative
            2. 12 Jan 2012 – HIV Ag/Ab COMBO Screen test – Non-reactive

            Please advise if I am

            1. do i have HIV?
            2. Do i need to go for another test?

            thanks a million.

            thanks
            Chandran

  69. help_in_need

    Hello Dr Tan,
    Wish you a very happy new year. First of all, I know it’s not possible for you to provide a conclusion, but I’m after an opinion and some guidance based on a certain incident and post symptoms.
    Background of the incident:
    I’m from Melbourne, Australia. I had an erotic massage 40 Days ago at a licensed parlour and had protected Oral sex and body to body slides. At one Stage the woman rubbed her clitoris which I had to stop but she continued rubbing her fingers hard on by body. I had shaven upper body and some parts. Are there any chances of getting the virus from her body fluids via microscopic cuts presented in my body? I know it’s a tough question to answer. Only other time she made contact with my penis was when she changed my condoms.
    Symptoms:
    From the following day I started getting flu symptoms, joint pains and the feeling you get when you’re about to fall sick. By the end of the first week, I started to get the unexplainable exhausted feeling. From the 3rd week onwards my throat glands got infected and got swollen a bit. Mild Gland infected pain is still there (this is the 6th week).By the mid of the 3rd week started getting small fungus near my groin area and near the anus for which I’ve been treated by some cream.Did the Hiv Ag/Ab test and screened for all other STDs by 3.5 weeks (24 Days)and were negative.Only abnormality of my blood report was my thyroid hormone level was relatively high.I consumed some herbal drinks which I generally use when I’m having a usual flu or cold.
    4th Week onwards I’ve been getting regular night sweats and recently my lungs got infected with a dry cough.Did an Xray and doctors say it’s normal and cannot distinguish any issues.My far vision got blurred. I was prescribed cephalexin (Keflex) antibiotics and I had those for a couple of days. In the meantime I repeated the Hiv Ag/Ab test on 33 days post exposure and I was still on antibiotics. It was negative. I was wondering if antibiotics or any other herbal drinks I had in previous weeks gave false results.
    FBE test done on the same day showed up abnormalities in white blood cells and neutrophils (both increased a bit) which is an indication of a infection.

    Finally from last Friday after an ejaculation I’m having a the burning sensation in my scrotum and prostate which still persists. I’m worried if it’s assymptotic inflammatory prostatitis driven by HIV. But most people say it’s too early for such a complication (6.4 weeks).My gland and lung infection pains are not consistent. It’s pretty much on and off. But the exhausted feeling persists with night sweats and strange bowel movements + occasional diarrhea/lose stools . All these symptoms are driving me crazy and I’ve been absolutely devastated.

    I really appreciate your hard work in providing guidance to people like us and would be extremely grateful to see a couple of words as an opinion/guidance from you.Doctors over here have been telling me the risk was absolutely negligible in contracting the disease but these symptoms for which even doctors have no clue are driving me crazy.I’ve reached a stage to get counselling from psychiatric.

    What are your thoughts about this whole scenario?

    Thank you very much for the guidance and GOD Bless you Doctor!

    • Hi help_in_need,

      I empathise with your situation. I completely agree with your doctors that there is literally no chance for you to catch HIV from your encounter. Furthermore, you have had multiple conclusive HIV tests that show you do not have HIV. The first thing for you to do is to forget about HIV. You do not have it and that is that. You must learn to accept this happy fact. Secondly, you must find out what is causing your symptoms. See a doctor who will not give up on you.

      rgds

      Dr Tan

      • help_in_need

        Thanks for the reply Dr Tan!

        I had a Hiv Ag/Ab test at 39 Days and it’s negative.Can I move on with it? One more thing, There’s a herbal drink I consume when I’m generally unwell (flu /cold). I had that for a couple of days after the first week and 3-4 days in 25-28 Day period. I’m not sure if it has some anti-viral ayurvedic medicine. Can that give false results?

        Thanks!

        • help_in_need

          Extremely sorry for asking a question again.

          I mentioned that the woman rubbed her clit and and once I stopped her she started rubbing her fingers really hard on my body and leg. What’s the chance of transmitting the virus from her fluids in this case?Sorry for sounding so paranoid!

          Thanks!

          • Hi help_in-need,

            Yes you are sounding paranoid. How much reassurance do you need? If you are that worried then you should just go for a test and put this matter to rest once and for all.

            rgds

            Dr Tan

        • Hi help_in_need,

          Sorry, I answered the previous question before I say this. The combo test at 39 days is conclusive. If you are going to look for all sorts of reasons to doubt the test then there is really not much anyone can do for you.

          rgds

          Dr Tan

          • help_in_need

            Thanks for the feedback, it’s just these symptoms that make me worry so much. Night sweats every night and strange bowel movements are the major ones I have apart from all other flu related issues. Feel really helpless and that’s what brought me here to look for some help.

            I’ll certainly update you on my status.Thank you again for looking into my problem and GOD bless you!!

          • help_in_need

            Finally, I don’t have any doubts about the test, it’s just the doubt I had whether that drink that I consumed on two occasions for a couple of days which has some anti-virals and antibiotics can reduce the accuracy of the results. It’s a question more for my own knowledge.

            Thanks!

  70. Dear Dr Tan,

    I had an exposure on 29 Oct 2011 with a sex worker and did the following checks:

    1. 3 Jan 2012 – Elisa Test – Negative
    2. 12 Jan 2012 – HIV Ag/Ab COMBO Screen test – Non-reactive

    Please advise if I am

    1. do i have HIV?
    2. Do i need to go for another test?

    thanks a million.
    CR

  71. Hi Dr Tan,

    I had an incident on the 3rd Dec 2011. I took a Hiv 1 & 2 / P24 Ag test on 31st Dec and an another one on 12th Jan 1012. Both came back Not Detected. Is this conclusive ?

    Sandro

    • Hi Sandro,

      Before I answer your question, please let me ask you mine. Didn’t you ask the doctor who conducted the test for you? I am sure you did. In that case, why are you still asking me? Is there any reason you do not believe him/her?

      rgds

      Dr Tan

  72. Hi Dr.Tan
    I appreciate what you did up there and still doing.
    my question is: I had an exposure (I don’t know if it’s a high risk) from (un)protected vaginal and oral sex with a call girl (sex worker) in New York,USA. I contacted Dr. Handsfield
    in another website and he said: “From a strict risk assessment perspective, you don’t need HIV testing; the chance of exposure and/or infection is too low”. because And it is very unlikely she had HIV anyway. The large majority of female sex workers do not (under 1%), and expensive escorts probably are especially unlikely to be infected.
    I did an HIV combo test after ( 8 ) days of exposure:
    the results were:
    the results all negative.
    HIV 1 Ab :-Nonreact.Nonreactive
    HIV 2 Ab :-Nonreact.Nonreactive
    HIV p24 ( Ag) :Nonreact.Nonreactive

    Is it conclusive?
    Thanks again.

    • Hi Adam,

      I have to respect Dr. Handfields’s opinion because he is obviously much more knowledgeable about the situation in the US than I am. What I can tell you is that a combo test at 8 days post exposure is useless in terms of accuracy.

      rgds

      Dr Tan

  73. Hi Dr. tan.
    I suppose my previous comment was much detailed.
    anyways, I did the compo test after 8 days of exposure.
    the results:
    HIV 1 Ab :-Nonreact.Nonreactive
    HIV 2 Ab :-Nonreact.Nonreactive
    HIV p24 ( Ag) :Nonreact.Nonreactive

    is it conclusive?
    now, it’s like 14 days after the exposure.
    what do you think the right time to re-test?

    thanks

    • Hi Adam,

      Whoever told you that a Combo test at 8 days or even 14 days is accurate? The right time to use the combo test is between 3 and 6 weeks. I prefer to do it at 4 weeks.

      rgds

      Dr Tan

  74. help_in_need

    Hi Dr Tan,

    I’m having constant diarreah now having electrolytes and got an ulcer underneath my tongue.(pretty much the only symptom I was missing) I think I’ve reached a point to put an end to this agony either putting an end to my life.

    I can’t believe how unlucky I am, even after such a zero risk incident to develop all these symptoms. Any advice would be highly appreciated I got nothing else to do at this stage.

    Thanks for your kind co-operation!

    • Answer to Help In need

      hello Help In need,

      come on guy.. go and see a Doctor and get your blood tested.. why living in fearful state.. for all we know if could be due to heaty weather, etc etc.. if a test results say non-reactive.. then u are safe and advise you take a full medical check up to see what causing those stuff you mentioned..

      thanks mate!

      • Hi Answer to Help in need,

        I think that is very sound advice indeed.

        rgds

        Dr Tan

    • Answer to Help In need

      hello Help In need,

      come on guy.. go and see a Doctor and get your blood tested.. why living in fearful state.. for all we know if could be due to heaty weather, etc etc.. if a test results say non-reactive.. then u are safe and advise you take a full medical check up to see what causing those stuff you mentioned..

      thanks mate!

    • Hi help_in_need,

      Seriously what is wrong with you? What you need is someone to knock some sense into you. Imagine that you have already crossed the road and reached the other side safely. You then see a doctor and keep asking ‘doc did I get hit by a car?’ And the doc says ‘No you did not’. And you say ‘BUT my arm hurts! My leg hurts!’ Did I get hit by a car??!!!’ For crying out loud man. There is nothing wrong with you and yet you are thinking of suicide. This really cheeses me off because I see people living with diseases a hundred times more horrific than HIV and see people living in conditions of such abject poverty that it will make you wince. Yet they find the courage to live on and in fact find meaning and joy in life. And here you are whining away when all you need to do is waltz down to your local clinic and get a simple HIV test done and solve the entire issue. What you need right now is professional psychiatric help.

      Dr Tan

  75. Ahmed Faris

    Hi Dr,

    I posted recently my concerns over HIV.( I live in Dubai and I need your answers as there’s no clinic to help like you guys do please help me )

    My case:

    I have had an oral sex with a man of unknown HIV status (deep kissing, sucking each other and I rimmed him but no ejaculation inside the mouth neither anal sex).
    That was on 5/1/2012 been dating him whole day till 8/1/2012 I gave him a hand job using durex lubricant after he has ejaculated I caressed his semen by my hand when I went to wash my hand I realised I have hangnail on my thump It was not bleeding at all but I could see the red skin inside it as it was happened hours ago (I don’t know when it has happened) it was sting when I went to wash my hand as if the semen was burning it ??!!
    On 15/1/2012 I had mild sore throat the second day 16/1/2012 I had a mild fever at night I woke on 17/1/2012 very tired with sore throat I checked the temperature it was around 38.3c on 18/19-01/2012 I was checking the temperature it was around 37.3 and 37.6
    On 20/01/2012 I woke up feeling no fever but the sore throat was still there and I felt tired in the afternoon and by legs were very tired I was not taking any medication till 20/01/2011
    On 21/01/2012 i went to the hospital the doctor said you have flu symptoms and this because of the weather in Dubai these days he has prescribed antibiotic and panadol the antibiotic was ( named zinnat 500mg) I took one tablet at night I felt my skin itching me I went to the doctor second day and he changed it to Clarithromycin antibiotic I used it from 22/01 till 25/01 the situation improved but started my day on 24&25 with diarrhea it was too hard which made me worried more and on 25/01/2012 morning my throat started to sore again but i felt better in the evening today 26/01/2012 I feel better and didn’t take the antibiotic only gargle till this moment everything is fine
    I have not experienced any rash vomiting diarrhea I think only Because of medication nor sweating at night but I am still checking myself and I am so worried.

    Update:

    I went to the hospital and the doctor he took throat swap sample and after few days the result was group A streptococcus test done on 28/1/2012 and I got the result on 31/01/2012.
    The doctor did a full check up and he prescribed the medication which worked fine till today 5/02/2012.

    On 1/02/2012 I did HIV 1& 2 antibodies & HIV antigen p24 (Electrochemiluminescent immunoassay) the result was negative.

    My questions:

    – The HIV test I have done was after 23days from exposure
    how accurate its??
    – Will it be the same result if I have done the test after
    30days or 33days from exposure?
    – Shall I do the test again after 90days from exposure?
    – I started taking medication to treat group A
    streptococcus on 31/01/2012 and before that I took
    antibiotic will this effect HIV test I have done (gives
    false result)?
    – Is this the final result? Do I need to do any test later
    cause I am so confused about this result may be I have
    done it quite early.
    – How soon we can check the HIV antibodies after how many
    days from exposure? and is P24 enough to be done after
    23days or 30days or 33days with how many days this test
    has to be done?

    Kindly help me many thanks for your time

    • Hi Ahmed Faris,

      Greetings to Singapore from Dubai. I’m confused. You said there is no clinic to help but yet you had a HIV test done. The doctor who did the test for you must be able to answer your questions is he not? It just sounds very strange to me that a doctor will conduct a test for a patient and not explain the results to him. As for your questions: 1. Quite accurate. 2. Very likely. 3. Yes you should. 4. No. 5. You should retest. 6. I prefer to conduct the P24 Ag/Ab combo test at 28 days.

      rgds

      Dr Tan

      • Ahmed Faris

        Many thanks for your answers here in dubai you cannot get the right answers always from the doctors its kind of they are trying to ease your stress.

        the test i have done was HIV 1&2 and HIV antigen p24 ECLIA (Electrochemiluminescent immunoassay)i did checked with the medical centre and the told me about it is that make any difference on the result or its the same if its been done with ELISA??

        i am too worried now why should retest the result will change??

      • ahmed faris

        sorry DR i forgot to ask if i the test is done at 37day is it fine ?? or i have to do it before that ???

  76. Poh Seng Yong

    Dear Dr Tan,
    I had unprotected oral sex and protected vaginal intercourse with a CSW on 18/1/2012. Did the combo test today at your clinic and it’s negative. When should I redo HIV testing again and with which modality? (I do not trust your locum doctor because she told me the results wrongly initially!)

    • Hi Poh Seng Yong,

      You should do the combo test at 28 days post exposure or the antibody tests at 3 months.

      Rgds

      Dr Tan

      • Poh Seng Yong

        I am planning to do another test on 31 days exposure at your clinic tomorrow. What would be the best conclusive test?

  77. Lonelyman

    I had unprotected anal sex with my bf On 27/12/2011 I did ejaculate out side I didn’t HIV 1&2 and HIV antigen p24 ECLIA on 1/02/2012 which is at 37 days the result was negative
    Shall I consider it convulsive ??

    • Hi Lonelyman,

      Yes it is conclusive.

      Rgds

      Dr Tan

      • Lonelyman

        So I don’t need to test again and I can make my self rest and go on with my life ?????
        Some people were telling me to test after 90 days and this scared me please advice me

        • Hi Lonelyman,

          How many times do you need to ask the same question and get the same answer before you are satisfied?

          Dr Tan

  78. Lonelyman

    Sorry Dr I meant I did the test not I didn’t mistyping

  79. help_in_need

    Dr Tan!

    Apologies for the depressed manner I commented earlier.

    I retested Hiv Ag/Ab test after 7.3 weeks – 51 days (Though the recommendation is between 28 and 42 days it’s the standard test they perform) and is negative. I’m a bit relieved but my symptoms have got worsen. Got a heavy head more like swelling feeling on my left part of head, night sweats,bowel movements, blotches gland pains oh the list goes on.Fatigue has gone away a bit which is the only good thing.

    My doctor is clueless and referred me to an infectious diseases specialist. I really hope the herbal drink I had on and off in 1st week and 3rd & 4th week has not affected the results considering the fact it’s a common drink used to treat colds and flus (indicating the presence of anti-bacterial,viral herbs).

    Like most people say it could be something severe amplified by my stress, but having said that I know for a fact it all started right after the exposure.

    Thanks for the encouragement!

  80. StressfulDL

    Hi dr tan, my exposure was at 31st oct 2011,protective virginal sex, unprotective oral sex . I had HIV rapid blood test at dsc at 4th week- negative, HIV rapid blood test at your clinic at 7th week -negative, HIV rapid blood test at your clinic at 9th week-negative. I do a HIV rapid test which is 87 day , 12 week and 3 days n negative. a full body check up on saturday 28 th jan 2011 which include a HIV blood lab test (90th day) , result was also negative. As you not around so the other doc explain the result to me . Everything was fine except I am not vaccinated against hepatitis A & B. so I took a jab from your clinic . I had also tested for some STD recommend by you at 9 week post exposure . All cleared . But I am not tested for hepatitis C . Should I be worry ? When can I test and how much? Does it affect my previous HIV test result n need to wait for 6 month to test conclusively for HIV ?

  81. Dear Doctor Tan!
    I tested negatively with rapid combo test by Alere 27 days past exposure and was happy that it was negative.I was ready to move on with my life but I saw this article and got terrified :
    http://sti.bmj.com/content/87/2/178/reply
    I would appreciate our opinion about the findings in the article. Does it mean that rapid combo test result is useless ?
    Thank you very much in advance

    • Hi Michael,

      First of all there are literally thousands of papers published on HIV most of which are not available free on the Internet. Secondly, doctors spend a long time studying how to critique papers and form and opinion on which are reliable or otherwise. Thirdly, there are all sorts of papers including case series, metanalysis, multi centre placebo controlled double blind etc etc. Each with their own applications and methods of interpretation. This requires a weighing of all evidence available and applying them to a patient’s unique medical scenario. This is why medicine is still practiced by humans and not machines. This is also why the person you should listen to is your doctor not try to outsmart yourself by reading papers available free on the Internet. Partial knowledge is much more dangerous than no knowledge at all.

      Rgds

      Dr Tan

      • Dear doctor Tan,
        Thank you very much for your attention and advice.I think i am just paranoid and in need of psychological help.My doctor had reasured me three times that rapid combo after 27 days is fully conclusive and no further testing is required. As far as I understand from the post on this forum , you are of the same opinion. Have you ever seen a negative rapid combi taken after 4 weeks of exposure that later became positive ?
        Thanks again and god bless you

        • Hi Michael,

          Yes I am of the same opinion as your doctor. If I have do you think I would go around advising people that 4 weeks is conclusive?

          Rgds

          Dr Tan

          • Thanks again. Does it make it any difference that I took at 27th day ,not on the 28th ?
            Regards

          • Hi Michael,

            No difference at all.

            Rgds

            Dr Tan

          • Dear Dr.Tan!
            You were absolutely right that my result was conclusive. I tested me again to do with rapid combo by alere (9 weeks past exposure) and it was negative. My doctor told it is like 150 % accurate and never needed retesting. I was just too anxious and paranoid =))) Good luck to you and your clinics and big Thanks for your time and attention

          • Hi Michael,

            I’m very happy everything turned out well for you. I wish you a long, happy and healthy life.

            Rgds

            Dr Tan

  82. StressfulDL

    Hi dr tan, my exposure was at 31st oct 2011,protective virginal sex, unprotective oral sex . I had HIV rapid blood test at dsc at 4th week- negative, HIV rapid blood test at your clinic at 7th week -negative, HIV rapid blood test at your clinic at 9th week-negative. I did a HIV rapid test on 87 day whic is 12 week and 3 days and result is negative. I went for a full body check up on saturday 28 th jan 2011 which include a HIV blood lab test (90th day) at your clinic. As you went oversea for training , another doctor explain to me the result , everything ok including HIV negative. But I was not immune against hepatitis A&B . So I too a jab at your clinic. I also took some std test recommend by you during the 9th week exposure . All neg.

    Now I am worry because I am not tested for hepatitis C. Do I need to test? When should I do it , your clinic provide? How much? Will it affect my previous HIV test result? Do I need to wait for 6 mth to test HIV again for conclusive result?

  83. warmonger

    Dear Dr Tan,
    On the 14th of January,I had protected sex with a female friend of mine,10 days later I went to take a DNA PCR test.At the 24th day of exposure,I went to take a p24 combo test.Both results were negative.
    1.Is my tests results 100% conclusive?
    2.If not conclusive,what is the accuracy in terms of % of the test(s) that I have just taken?
    3.What further tests do you recommend me to take if not conclusive?
    Thank you very much…

    • Hi warmonger,

      1. The combo test is conclusive, the DNA PCR is not. 2. Na 3. Na.

      Rgds

      Dr Tan

      • warmonger

        Dear Dr Tan,
        Thank you very much!now I can move on with my life…

        • Hi warmonger,

          You are welcome.

          Rgds

          Dr Tan

          • warmonger

            dear dr tan,
            I was fully reassured when you said that I’m 100% HIV free…however now on the 29th day,I’m having a very bad cough…I understand that different people take different amount of time to produce antibodies/antigen…is it possible that the antibody+antigen was too low in my body to be detected by the test at that time?

          • Hi warmonger,

            I have given this advice so many times. You have 2 choices: you either accept the fact that you do not have HIV, or you worry about every symptom that you develop. The choice is yours.

            Rgds

            Dr Tan

  84. StressfulDL

    Hi dr tan, do you mind please help to answer my queries.
    Many thanks.

    my exposure was at 31st oct 2011,protective virginal sex, unprotective oral sex . I had HIV rapid blood test at dsc at 4th week- negative, HIV rapid blood test at your clinic at 7th week -negative, HIV rapid blood test at your clinic at 9th week-negative. I did a HIV rapid test on 87 day whic is 12 week and 3 days and result is negative. I went for a full body check up on saturday 28 th jan 2011 which include a HIV blood lab test (90th day) at your clinic. As you went oversea for training , another doctor explain to me the result , everything ok including HIV negative. But I was not immune against hepatitis A&B . So I too a jab at your clinic. I also took some std test recommend by you during the 9th week exposure . All neg.
    Now I am worry because I am not tested for hepatitis C. Do I need to test? When should I do it , your clinic provide? How much? Will it affect my previous HIV test result? Do I need to wait for 6 mth to test HIV again for conclusive result?

    • Hi StressfulDL,

      Didn’t I answer this question already? I said I am very surprised your tests did not include a test for Hep C. I will view your tests results when I am back. If you really test positive for Hep C the your HIV window period will have to extended till 12 months.

      Rgds

      Dr Tan

      • StressfulDL

        Sorry dr tan , I cannot see a reply from you and I understand u only do this helpful service when u r free . So I post again that time. As for my case which I not sure whether I was tested for hepatitis C when I tested stds during my post 9 week exposure . My result was told by u through phone and I fail to get a hardcore of my report from your clinic . It is my fault and now I am worry about my HIV status again.

        1)Can I call up your clinic to obtain a copy so I can check?
        2)If I was tested n negative as u tell me all std test results were ok through phone that time . Is the hep C result conclusive? I read that it take up to six month to be conclusive.
        3)If your clinic can give me my std result n I am not tested hepatitis C, when will be a good time to test for a conclusive resul?
        4)What test to take and how much?
        5)do you suggest I go see the doc in your clinic personally to have a proper consultation ? I noe I am not right to ask you so much question which consider as consultation.
        Sorry I was just too worry again.

        • Hi StressfulDL,

          1. Yes 2. I have to review the details of your case. 3. Now. 4. Hep C IgG. Not sure how much. Probably about $40. 5. A formal consultation is much better than using this platform. I’m sure he wil be able to answer all your questions.

          Rgds

          Dr Tan

          • StressfulDL

            Hi dr tan , thanks for your prompt reply Though u r oversea training. All the best for your oversea training .

            I believe I was not tested for hep c as no blood was drawn for my stds test . I will go for a test at your clinic tomorrow.

            It would be 15 week post exposure tmr so the hep c test result will be conclusive, no need to wait for 6 mth?

            Haiz , sleepless night again to worry my HIV status. No one to blame except myself for getting into trouble. Thanks for your great advice and help as I have no one to talk to about my sexual health .

  85. Hi Dr Tan,

    I received unprotected insertive oral sex from a man on 11 Jan 2012, and 21 Jan (10 days) i started to develop a fever which come and go until 23 Jan when I took antibiotics. However ever since then, in the next weeks (30 Jan – 3 Feb) I kept having symptoms like dry mouth and throat, chills and feeling feverish which really worry me.
    Then I went to your clinic (Robertson walk) to do a p24 combo test on 9 Feb (29 days post exposure) and was told by the doc that it was negative. However yesterday 10 Feb I had a sore throat and saw there were some ulcers behind the throat, this throws me back into panic and anxiety again. Is the p24 combo test at 29 days conclusive ? Does the sore throat mean the onset of ARS symptoms after 4 weeks ? Really hope you can advise me, I am getting so worried.

    • Hi Damian,

      I have answered such questions many times. This is what I usually say: you have 2 clear choices. You can either accept the happy fact that you do not have HIV or you can spend the next few months worrying about every little symptom that crops up. So what choice will you make? You must understand that it takes a lot for a doctor to tell you a test is conclusive that you do not have HIV. We need to be 110% sure. This is our professional responsibility to society.

      Rgds

      Dr Tan

  86. StressfulDL

    Sorry dr tan , me again . As I am only going to test for hep c tmr , so my HIV blood rapid test at 4 wk , 7wk,9wk, 12 wk and lab blood test at 90 days at ur clinic for body checkup is not accurate anymore . I am worried sick now . Sorry as I am very worry now . I thought I was clear of HIV as told by you previously. I wan to move on for my life.

    • Hi StressfulDL,

      Stop making your own life miserable. What are the risks of contracting Hep C through sexual exposure? Exceedingly low. Look, if you want to continue torturing yourself and wasting your money, please go ahead, there is nothing I can do to stop you. What I can say is that all this worry and paranoia is exactly that. Worry and paranoia.

      Rgds

      Dr Ta

  87. Hi, doctor , Is hepatitis a affects the hiv window period? I means lengthen the period. Thanks

  88. Hav virus. Hepatitis a

    • Other Std desease like hep b,c sphilis, go, how is the window period when is the best time to get tested. Anyway, this week i am in Singapore and want to visit your clinic. I got hiv test 81days Elisa and it was negative. I Wonder WHat cause me Easily tired and sweating , stiff Nick and mild muscle ache. I was tested positive for hepatitis a And chikungunya.. I am confuse now.

      • Hi kindly Dr Tan, my exposure was 18nov
        18 dec hbsag negative hep b
        11 jan hcv neg, hav positif rate 100
        11 jan sphilis and go tested negative. My Concern
        1. Should i take More test for these Std
        2. For HIV, my Elisa test was 81 day neg,, Should i take a Pcr or Rna test to make sure its conclusive that my desease it’s not cause by HIV. Or any other test to confirm. Like:Antibody test 4,5,6 months. If Rna test can conclude this i want to do this test. Please tell me what to do doc.
        3. I Would like to Thanks u from the bottom of my heart. Thanks for your concern

        • Hi Roberto,

          I have been answering multiple questions from you for more than 2 months. This seriously has to stop. It’s not that I do not wish to help you but you really need to see a doctor. This forum is not a substitute for medical consultation. Just see a doctor wherever you are and get a proper consultation. I am NOT your attending physician. I cannot manage your case over the Internet. Please see your doctor.

          Rgds

          Dr Tan

      • Hi Roberto,

        I am away till 26 Feb. Although I would be delighted to see you at my clinic, the fact remains you need a doctor in your own home country who can follow up with you and reach a diagnosis. There is very little I can do for you with one single visit.

        Rgds

        Dr Tan

  89. Dear Dr.Tan !
    Do you provide phone consultation? The thing is I live in Europe and would like to ask you some questions about Alere Determine Combo kit ? I am ready to pay for it by either paypal or money transfer.
    Thanks in advance

    • Hi Michael,

      Because of legal and liability issues I can only provide phone consultations to patients that I have seen before. I’m sure there are very good doctors in Europe who can help you.

      Rgds

      Dr Tan

  90. Dear Dr.Tan !
    People in this article suggest that rapid combo is less sensitive than combo that is done at the lab , is it true ?I wonder also what acute hiv infection is ?is it less than 4 weeks past exposure ? I lost my sleep after I saw this info.Your help would be much appreciated.

    http://www.aidsmap.com/Rapid-combination-test-fails-to-detect-many-cases-of-acute-HIV-infection/page/2204685/

    • Hi George,

      There are many studies out there. Some available free online but most require a paid subscription. It takes doctors years of study to analyse each study and apply them to a patients unique clinical situation. You cannot read one study then start making conclusions. That is why medicine is still practiced by humans and not machines. The best thing for you is to speak with your doctor with regards to your unique clinical situation and ask him/her what test you need.

      Rgds

      Dr Tan

      • Does this informantion change your opinion about rapid combo tests ?

        • Hi George,

          I will keep it in mind and be on the lookout for more published statistics on the rapid combo test. Meanwhile, I still believe in its efficacy.

          Rgds

          Dr Tan

          • Dear Dr Tan !
            Thanks a lot for your opinion . I believe in your expertise and now feel much better.

          • Hi George,

            I’m glad you are feeling better.

            Rgds

            Dr Tan

  91. StressfulDL

    Hi dr tan,
    I understand your point that I may be scarring myself , the lady doctor in your clinic also told me it is low to contract hep c through sex. Anyway I still went to do the test and also for herpes as I was not tested last time . 15 week from exposure. I just took it to ease my mind so I can move on my life . I now still waiting for the result . I will post it once I got it . I hope it is ok and I can forget this whole incident. Sorry that I was so paranoid , think I am just guilty form what i had done and I do not want to pass any of these diseases to my love ones. I just hope i am given another chance to live a better life. Once again, thanks for all advice and help u had given to me and others.

    Anyway will be seeing u on 29 jan again if u r back for a 2nd jab for hep A/B vaccine .Wish me good luck and i wish good luck to those who are out there waiting for results .

    • Hi StressfulDL,

      I don’t have to wish you good luck because I am 100% confident you do not have Hep C. You don’t have to apologise. I am sometimes harsh because I have seen patients’ lives destroyed by a completely unnecessary worry about the disease and not the disease itself. This to me is just as bad as having HIV.

      Rgds

      Dr Tan

  92. Hey Stressful DL,

    Wish you good luck and I hope everything turns out well for you. :)

  93. dear Dr,

    how are you? i just wanted to check that it is likely that someone can develop one symptom 4-5 months after exposure?

    i had a test (ag p24 + HIV antibody 1+2) using ECLIA method 38d post exposure and came back negative.

    thank you,

  94. Hi dr

  95. Hello Dr,

    how are you? i just wanted to check that it is likely that someone can develop one symptom 4-5 months after exposure?

    i had a test (ag p24 + HIV antibody 1+2) using ECLIA method 38d post exposure and came back negative.

    thank you

    • Hi Robin,

      Your test is conclusive of the fact that you do not have HIV. Whatever your symptoms are, they are not due to HIV.

      Rgds

      Dr Tan

  96. StressfulDL

    Hi Dr Tan,

    I had just received my result: as you expected,
    Herpes 1 &. 2 – neg
    Hepatitis C – neg
    Both at 15 week post exposures. I am very relieved and happy now. Now I can truly trust my rapid HIV test taken at 4,7,9,12 weeks n lab test taken at 90 days. Also for some of the stds taken at post 9 week.
    I wanna once again thank you , dr goh and the lady doc, your clinic staff for all the help n advice given to me. I can now sleep well, worry less n move on w my life. I gng oversea next week n now I can enjoy the trip w my love. Thank you.

    Thank you Paige for good luck wish. All the best to you all.

    • Hi StressfulDL,

      I am extremely happy for you. It has been a roller coaster ride. The ordeal is now all over. I wish you and your family a long, healthy and happy life.

      Rgds

      Dr Tan

  97. Hi, dr. Tan . I have some questions for you. hope you will answer me.

    I am from Europe, but i will work on a ship that Goes Port Klang-To Thailand, so i wonder if it is possible for me to get tested for HIV in Port Klang after 3,4 weeks from exposure.
    My expousure was like that: i stimulated a spa Girl, with my finger into her vagina, and then i realised that i have some little scratches on finger ,like when you have little calcium in the body. After that i washed me all over the body, had a shower, and few hours later i scratched involuntary my nose and bleed a little bit , with the same finger. Should i be worried?
    Anyway, i want to get tested but i don-t know any clinic in Klang, to do me this combo test or another test that be good at 3,4 weeks…Thank you very much for listening, hope so you will respond soon.

    • Hi Aproblem,

      First of all your risk of HIV is absolutely zero. You do not even need need to get tested. I am also not familiar with the medical services at Port Klang.

      Rgds

      Dr Tan

  98. hi doctor as there is less percentage of hiv people in saudi arabi i had sex wid a indonesian baby sitter in which i had protected intercorse and unprotected oral sex after that i got too much worried i before taking my hiv test i tested her for hiv1&2 in which she was 0.41% nonreactive after the exposer of mine with her i took hiv combo test in which p24 was also included on 27th day the result was given to me in 40 min and my result was negative and doctor said me no more further testing for hiv and go and visit a phcycological doctor for my thing of hiv is he right do i dont need to get tested again please help me doctor i am dieing and want to kill my self please help me up doctor pleas and sorry my english is not to good

  99. and i got tested for all stds like

    1)hsv1 = tested on Igm ;result = negative
    2)hsv2 = tested on Igg.result = negative
    3) chlymedia = result = negative
    4)syphillis = vdrl = result = negative
    5)hiv 1 & 2 with p24 = result = negative at 27th day of my exposer.

    does all this makes me do not do any test further in near future as my doctor said not to do any test in further as previously my partner got tested for hiv1 & 2 both where negative please help me up doctor god bless you … thanks

    • Hi jhon,

      There are too many variables for me to comment on the STD tests. However, you definitely do not have HIV. You should listen to your doctor’s advice.

      Rgds

      Dr Tan

      • thankyou doctor please last question sir why my cough is not stoping does it because of intence smoking and some time i am feeing uneasy to breath and i do have a lower back pain please help up doctor ,god bless you .

        • Hi jhon,

          You are a heavy smoker and have a chronic cough, shortness of breath and lower back pain. You really need to see a doctor as soon as possible. This has nothing to do with HIV or STDs.

          Rgds

          Dr Tan

  100. dear dr,

    i already post a question but i seems like not showing up on the site …
    i appricate ur providing help for people which is very nice..

    i come here to site each time to check the comeent and so on …

    dr i need ur opinion on my test if u could,please..

    dr iv had protected sex and unprotected oral sex and deep kiss ,, iv got alot of symptom .. i did several test which will shown as :

    1.rapid test 27 days.

    2.combi test cobas roche at 5 weeks=37 days

    3.4th gneration test combi ECLIA method at 6 weeks..

    all of them thx to god negative …

    so i need ur advise dr .. to put it behind our i need to do another test…thx alot dr .. and i appreciate ur help .. best wishes,,

    • Hi eng.M,

      Your tests are conclusive. You do not have HIV. Please put this all behind you and move on.

      Rgds

      Dr Tan

      • Thx a lot dr for ur help … I really appricate and a thankfull for ur free advise which not every one will provide … There are some people telling me the same … But I don’t take it from them .. Cuz from my view … Any thing u take it .. U should take it from profissional on thy faild or leave it … God bless u drtan

        Best wishes,,

  101. LAST QUESTION DOCTOR

    thankyou doctor please last question sir why my cough is not stoping does it because of intence smoking and some time i am feeing uneasy to breath and i do have a lower back pain please help up doctor ,god bless you

    • Hi jhon,

      See your doctor as soon as you can. I cannot diagnose your cough for you.

      Rgds

      Dr Tan

  102. doctor sorry to disturbd you again last question for eternity does the above cough and un able to breathing is hiv related please tell me doctor please

  103. LAST QUESTION DOCTOR FOR THE FINAL TIME

    PLEASE LISTEN 2 ME AS YOUR LITTLE BROTHER PLEASE DOCTOR

    does the above cough and un able to breathing is hiv related please tell me doctor please

  104. hi doctor tan i went to my gp he took my test of x-ray with in cluding sugar test and blood sample for any viral infection test like

    1) xray – chest pa (1views) = result = fit condition

    2) pulmicort inhilation = result = fit condition

    3) lab – CBC = result = fit condition

    4) lab – RBS = result = fit condition

    5) lab – CRP = result = fit condition

    BASED ON THIS MY DOCTOR SAID I AM FIT N FINE HE SAID ME HAVE SOME MEDICATION FOR 4 DAYS AND I WILL BE F9 AND REGARDING STD N HIV HE SAID I NEED 2 GO TO MENTAL ASAILUM PLEASE DOCTOR I WOULD BE HAPPY IF U PUT YOUR VIEWS OVER HERE THANKYOU

  105. help_in_need

    Hi Dr Tan,

    Are confirmatory tests for HIV (western blot) generally done without consulting the doctor who referred the test? I had a recent test for FBE, ESR, Thyroid , HIV and Syphillis Serology. All results came in one day except for Hiv & Syphillis and it’s still pending which is unusual as in all my previous tests they issued hiv results in one day.

    I’m worried if they are doing confirmatory tests like western blot but my doctor has not been informed about anything as well. If that’s so I don’t understand as I’ve tested for Hiv Ag/Ab from 4th week to 8th week giving me creeps thinking I’m an exception not to get diagnosed by the combo test.

    I know I must have crossed the line in questioning, I do understand even if you don’t reply at least by a word, but I just had to let this go as I trust your guidance,opinions & advises more than you would believe!

    Apologies!

  106. Hi Dr.Tan,
    Yesterday was my 28th day after exposure.
    I did the combo test: the result was nonreactive.
    Is this conclusive?! or should I repeat it after 3 months?
    Thanks a lot.

  107. Hi Dr.

    p24 combo after 90 days ( negative )
    HIV 1, HIV 2 after P24 25 days ( negative )

    do i need to do ather test ? how % is it ?

    Thanks

    • Hi Hassan,

      No you do not need anymore tests. You do not have HIV. The tests are 100% accurate.

      Rgds

      Dr Tan

      • ELISA Unit

        Chlamydia ( Igm ) 3.30 EU/ml

        Herpeselect igG

        Treponema Pallidum ( TPHA ) ( qualitative ) Non reactive

        Thank you.

  108. testing. nothing can be posted.

  109. Hi Dr Tan,

    How’s your reservist. Sorry to trouble you again. today is the 30th day of my exposure, I have just did a
    -Rapid Fingerprick Blood HIV-1/2 P24 Antigen/Antibody combo (HIV Duo Test)
    In the website it says that it is recommended by UK guideline in HIV testing 2008 – conclusive at 28 days post exposure.
    Result was negative.
    And the doctor said that it is 99% conclusive at this 30th day exposure, however in SG, there is a guideline about conclusive result can only be encourage at 3 months after exposure.

    My questions are….

    1. if my this results is negative today (30th day), how many people got positive at 3 month mark?

    2. If i got negative at 3 month mark which is again 99% conclusive, do i need to do another HIV test on the 6 month mark to be 100% percent sure?

    3. At this point of time, i have every symptoms of HIV which is quite serious to me. Because i can really felt the pain which i never felt before. my symptoms are….
    super headache, eye pain, painless sore on eye lid, 3 painless pimple on lips, 2 blisters on inner lips, 2 canker sore on inner lips, on and off fever, Blocked nose, Blocked Ear, diarrhea, Super flu with running nose and green mucus, neck right lymph nodes swollen with pain, shoulder pain, Joint Pain, Muscle Ache,lower back pain, dirty white/yellow tongue, even chest pain was present 3 days ago, Sore throat.
    Will all these symptoms cause my today HIV duo test to be false negative? And will it turn out to be positive on the 3 month mark?

    sorry for the super worried ignorance questions. But all my symptoms really doubt my Negative results.

    Thanks alot for all the answers Doctor. I wish you Success, Healthy and Happy in life (3 main things i’ve learnt through this worried incident)

    • Hi small small,

      The test is conclusive. You do not have HIV. Please see a doctor about your symptoms.

      Rgds

      Dr Tan

  110. ELISA Unit

    Chlamydia ( Igm ) 3.30 EU/ml

    Herpeselect igG

    Treponema Pallidum ( TPHA ) ( qualitative ) Non reactive

    Thank you.

  111. my q
    how is my result ?
    thanks

    • Hi Hassan,

      Medical test results should always be interpreted on the background of medical history and the findings of physical examination. We are treating a human being not a set of numbers on a printed report. I am unable to interpret your results for you. Please ask the doctor who did the tests for you.

      Rgds

      Dr Tan

  112. help_in_need

    Hi Dr Tan,

    This is just for general understanding of the combo test.The Combo tests I’ve done are from the Abbot architect according to the pathology. Is that the same manufacturer you are working with for your tests? They also said that they last installed it in 2009 and have got a new kit which will be installed in a couple of weeks. However they said there’s no difference in the performances and the one they installed in 2009 and the new one are the same.

    Do you believe there’s a discrepancy of the accuracy from 2009 to 2011?

    Thanks!

  113. Dear drtan,,

    Sorry for posting agine dr, but I really need an opinion,as I I wana to be safe as I will be with my wife. today at 12 weeks marks,(3 months)..iv done all std check up in ma city all of them become negative thx god. As an hiv fears ..uv told me that ma test are conclousive and I hav faith in u. But us a backage come with all std check.

    Herps 1 become positive…

    Dr does the simplex herps 1 that iv got affect my hiv test at 12 weeks (3 months)

    Dr does eclia test method by roch is good as elisa dr?.. And the COI 0.537 does mean something or nothing?

    Thx alot drtan a lot..
    looking forward to hearnig from u dr.

    Best wishes,,, eng.m

    • Hi eng.M,

      Congratulations. You do not have HIV. That is conclusive. It’s time to move on.

      Rgds

      Dr Tan

  114. londoner02

    Hi doctor tan .,im 20 years old from london… i had 2 times unprotected sex with a girl who most likely is a hiv + on december 10th 2011 and again on 14th i had an unprotected vaginal sex with another girl unknown status.  Both in london but the first girl was on holiday here ( iranian girl ) .. and on february 9th i suddenly started feeling itchy every where on my body for 2 days .after that 2 days i woke up on 11th and realised i had some pinhead red/ pinkish dots on my both arms and pain in my sholder especially left one up to my neck and painfull lymph nodes on my neck and armpits since then my whole bodys been in some random pain that i get like in my limbs ,joints especially from my knees down to the feet and shoulders  so i got worried and went for a duo hiv test on 11th feb at freedomhealth clinic and the result was negative .. had another duo test on 15th negative again .. since 15th the pains kind of gone to my abdominals including my fingers and been feeling itchy between my fingers and my feet .. had another hiv test ( dont know what it was called but it was antigen/ab hiv 1/2 on 22 february and it was negative .. But i still get the pain in my joints muscles and abdominal and the rash still on my arms found a bigger 1 on my back and now after all im
    Having a cold with stomach problems . Ps ive been having sex with my girlfiend since i slept with them two girls and 2 days ago my partner told me she got a cyst Where the gum n cheek meet at the top and shes having a vaginal yeast infection so i sent her to take a duo test at the freedomhealth clinics and the result came negative on 20th february but shes having a cold today aswell .. my question is what do you thing about all this ?? And if its possible for the tests not to be accurate ? Do you recommend another test at 12 weeks ? thank you.. ive been so worried and anxious please reply and read the whole thing i wrote .. Doctors here in london said that the tests that ive done are conclusive ?? Is that right doctor ?

    • Hi londoner02,

      I see absolutely no reason why you should doubt the doctors in London. Especially Freedom Health which is a very internationally well regarded and professional clinic.

      rgds

      Dr Tan

  115. i did the combo test after 20 days of exposure results came negative , is it conclusive ?

  116. i did the combo test 20 days after exposure results came negative , is it conclusive?

    • Hi gha,

      No it is not. Repeat a combo test at 28 days post exposure or an antibody test at 3 months post exposure.

      rgds

      Dr Tan

      • i did after 41 days and it’s negative is it conclusive now ?

        • Hi gha,

          You did what after 41 days? Please repost all details and question.

          Thanks

          Dr Tan

          • i did the a rapid combo test p24 ag/ab

          • Hi gha,

            You are going to need to put the details and question in the same post. It is hard to describe but the wordpress platform I am currently using is really lousy at seeing previous posts. This will not be a problem when the new forum is up.

            rgds

            Dr Tan

  117. londoner02

    Dr tan please reply ive been checkin ur website every 10 mins !! Hoping that ud reply .. thank you dr

    • Hi londoner02,

      Every 10 minutes? Seriously man. I run a very busy clinic. Yesterday I worked from 8am to 9pm and saw 75 patients. Then I go home and have my first and only meal of the day then I spend what little time I have left with my baby boy before I wake at 7am and do it all over again. So a little patience from you for what is essentially a FREE service will be greatly appreicated.

      Dr Tan

  118. Hi Dr,
    what are the chances of a negative combo (p24 + Antibody anti HIV 1+2) test at 38d post exposure to turn positive after 3 months?
    thank you,

  119. londoner02

    yes dr tan im sorry .. I was just tryna show how worried i am .. Thanks again for being there for people like me .. i thought ud read my story im gonna write it here again ..Hi doctor tan .,im 20 years old from london… i had 2 times unprotected sex with a girl who most likely is a hiv + on december 10th 2011 and again on 14th i had an unprotected vaginal sex with another girl unknown status.  Both in london but the first girl was on holiday here ( iranian girl ) .. and on february 9th i suddenly started feeling itchy every where on my body for 2 days .after that 2 days i woke up on 11th and realised i had some pinhead red/ pinkish dots on my both arms and pain in my sholder especially left one up to my neck and painfull lymph nodes on my neck and armpits since then my whole bodys been in some random pain that i get like in my limbs ,joints especially from my knees down to the feet and shoulders  so i got worried and went for a duo hiv test on 11th feb at freedomhealth clinic and the result was negative .. had another duo test on 15th negative again .. since 15th the pains kind of gone to my abdominals including my fingers and been feeling itchy between my fingers and my feet .. had another hiv test ( dont know what it was called but it was antigen/ab hiv 1/2 on 22 february and it was negative .. But i still get the pain in my joints muscles and abdominal and the rash still on my arms found a bigger 1 on my back and now after all im
    Having a cold with stomach problems . Ps ive been having sex with my girlfiend since i slept with them two girls and 2 days ago my partner told me she got a cyst Where the gum n cheek meet at the top and shes having a vaginal yeast infection so i sent her to take a duo test at the freedomhealth clinics and the result came negative on 20th february but shes having a cold today aswell .. my question is what do you thing about all this ?? And if its possible for the tests not to be accurate ? Do you recommend another test at 12 weeks ? thank you.. ive been so worried and anxious please reply and read the whole thing i wrote .. Doctors here in london said that the tests that ive done are conclusive ?? Is that right doctor ?

    • Hi londoner02,

      The doctors at FreedomHealth are extremely professional. I have no doubt that when they say your tests are conclusive, they are truly conclusive.

      rgds

      Dr Tan

  120. help_in_need

    Hi Dr Tan,

    If you can please provide your opinion on this.

    I tested for all again. STIs, CMV,EBV, HIV from a 4th gen test after 10.5 weeks. Everything is negative except for CMV. Tested Low Positive for CMV.

    All the HIV like symptoms I’ve been experiencing could be due to CMV from what I got to know. Does that make any sense? Can I simply move on thinking it’s just CMV or do I need to keep on testing for another considerable period of time?

    The reason why I’m asking is because I learned that symptoms like blurry vision, diarrhea are evident with people having CMV if they are immuno-compromised.

    It will be a great help if you can guide me on this and I wouldn’t trouble you any further

    Thank You!

  121. DACH,Japan

    Dear Dr Tan,
    I had protected vaginal sex and unprotected oral sex on Jan 28th. I did test on 20th Feb and the report is Hiv-AgAb negative. I did another test on 25th Feb emphasizing the doctor that Architect HIV Ag/Ab Combo test to do. This result is also negative. Again I need to do any more test. Awaiting your reply eagerly.

    with regards
    DACH

    • Hi DACH,Japan,

      Again I would like to ask you why you did not ask your doctor? Or if you already did, why do you doubt his reply?

      rgds

      Dr Tan

      • DACH,Japan

        Dear Dr Tan,
        Thanks for your reply. Doctor said only the absence of HIV virus. I didn’t ask him much. I was scared. Please inform me I need to do any other test. I will never do this mistake again. Still I am very fearful. Expecting your reply.

        with regards
        DACH

        • Hi DACH,Japan,

          Please recap your exposures and test. Thanks.

          rgds

          Dr Tan

  122. londoner02

    hi dr tan .. Yes you are right about doctors at freedom health .. But maybe they dont take my case as a high risk !! i wanted to ask you do you think tests negative at 8 ,9, 10 with duo combo and finger prick at 11 weeks all negative would be false negative?.. Would i need to test again at 12 weeks ?? even though that i got so many symptoms like enlarged lymph nodes , red dots on my arms (rash) , dry skin, body pain ?? thank you again

    • Hi londoner02,

      Freedom Health is a very professional and internationally reputable clinic. If the doctors there tell you that your HIV tests are conclusive I am sure that they are already 110% satisfied that you do not have HIV. What you are implying is that the doctor who saw you did not take your case seriously and therefore gave you wrong advice. This is a very very serious thing to imply. You must have good solid reasons to think this. If not I feel that you owe the doctor at Freedom Health an apology. As far as your case is concerned, I totally and completely agree with my esteemed colleagues at Freedom Health. You do not have HIV.

      rgds

      Dr Tan

  123. Hi Dr,
    could enlarged circumvallate papillae be a sign of HIV in general? it appeared 4 month after the exposure.

    thank you,

  124. with a dry back of the tongue. i appreciate your information Dr.
    Thank you,

  125. Australia

    Hi Doc,
    I got a HIV antibody and antigen test (Fourth Generation) at 26 days here in Australia. 1) Is this conclusive? 2) Is there any chance of this changing to positive?

    • Australia

      I forgot to say that my result was negative.

    • Hi Australia,

      Yes it is. Question 2 is redundant.

      rgds

      Dr Tan

      • Australia

        Sorry but was your reply, Yes it is (conclusive)? And what does ‘redundant’ mean?

  126. hi Dr,
    one more question, is Candida esophagitis could be considered an HIV symptom based on your experience, after 3 month of exposure?
    thank you,

    • Hi Robin,

      No. Candida Esophagitis can be a symptom of AIDS which takes 8 to 10 years to develop.

      rgds

      Dr Tan

  127. Australia

    Hello Doc,
    I’m from Australia and I got a HIV antigen and antibody test at 14 and 26 days. The result was both negative. Can it be concluded with 100% certainty that I am free from HIV?

    • Hi Australia,

      No. You need a repeat test. Please talk to your doctor about it.

      rgds

      Dr Tan

  128. Anxiety

    Hi Dr,
    Is a HIV antibody and antigen test at 33 days conclusive? This test was done in Australia at a leading pathology. The result was negative.

    • Hi Anxiety,

      That is called a Duo or Combo test. Yes it is conclusive at 33 days. Congratulations, you do not have HIV.

      rgds

      Dr Tan

  129. Australia

    Hi Doc,
    Sorry to be so annoying. In one of my posts you said that a duo test at 26 days was conclusive. However in another post you said it was not and required a repeat test. I just wanted to know for the last time sorry, but is it conclusive? If not, does it require a repeat test?

    • Hi Australia,

      Nothing in medicine is black and white. There is nothing magical that happens on day 26 or 28 that makes any test conclusive or not. You are asking me to commit to an answer when I am not even your attending physician. What I can say is that there are medical studies that say the duo test is accurate from day 21 however, I personally like to conduct it at day 28. The right thing for you to do, and the thing I strongly advise you to do, is to see your doctor and get a proper medical consultation. This forum is NOT a substitute for a formal medical consult. In order to give you the information you request for, I have to make many assumptions. That is far from ideal. You still need a proper medical consult.

      Rgds

      Dr Tan

  130. Dear Dr Tan,

    I previously went to your clinic 27 days post-exposure to get myself tested with the P24 Combo test which came out Negative. Recently, I went to AFA anonymous test center and got myself tested with the Antibodies test 90 days post-exposure, and I am glad it came out Negative as well. I’m glad that I can finally put this episode behind me.

    Thank you for your support and very good effort in maintaining this online space for people to have their worries addressed and keeping many of us sane. Thank you once again and God bless you and your family. :)

    • Hi Alan,

      I am very happy you are well. This also affirms the accuracy of the P24 test at 27 days post exposure. Thank you for your kind words. I wish you a long and healthy life. Please stay safe from now on.

      rgds

      Dr Tan

  131. Victor

    Hi Dr,

    is a combo test 37 days post exposure conclusive no matter the details of the exposure? i tested negative & i am a little bit anxious.

    thank you,

  132. Victor

    .

  133. Victor

    Hi Dr

    is a combo test 37 days post exposure conclusive no matter the details of the exposure? i tested negative & i am a little bit anxious.

    thank you,

    • Hi Victor,

      Yes it is. Did the doctor who did it for you not explain this to you?

      rgds

      Dr Tan

  134. Victor

    hi,

    The doctor at the Lab told me to forget about the issue & if there was any infection it would certainly appeared by 37d post exposure with the Duo Test. But in nature i am anxious more than normal, so i preferred to check another opinion espacially from a professional Dr. like you. Can i leave that behind & move on?

    thank you for your effort,

    • Hi Victor,

      Any reason you do not believe the lab? How many people do you have to check with before you finally accept the fact that you do not have HIV? Stop torturing yourself. You should be happy that you do not have HIV. Please forget about it and move on.

      rgds

      Dr Tan

  135. hi drtan
    i did a combo rapid test after 41 days of possible exposure and it came negative is it accurate and conclusive

    rgrds
    gha

    • Hi gha,

      It certainly is accurate and conclusive. Time to close this chapter in your life.

      rgds

      Dr Tan

  136. Confused

    Hi, i have protected sex with an HIV positve man in Jully 2011.. Did home HIV finger test at one month and again at 4 months, both tests were negative. Repeated the same tester agin at 5 months and it had a second faint line which later become invisible. I was sooo woried went to my doctor who did a P24 Antigen/Antibody lab test at 7 months which came back negative. The doctor assured me that i should be fine and may be i did not carry our the home test correctly. Have u heard of such a thing before? Do i need to go and test again, please help. i am soo confused and woried. Thanks

    • Hi Confused,

      That is the very reason I am not a big fan of home test kits. There are just too many variables. My advice to you is to ignore your home test kits and listen to your doctor.

      Rgds

      Dr Tan

      • Confused

        Thank you very much Dr Tan. One more question that is contributing to my wories is that i have developed a pimple at one of my battocks which is itchy at times and now look like a lesion. it is not big in size though but it get me worried. What should i do?

        • Hi Confused,

          The obvious thing to do is to see your doctor. These ‘pimples’on your buttocks can become an abscess. You really do not want that to happen cos then you’ll need surgery to drain it.

          Rgds

          Dr Tan

          • Confused

            Thanks a lot Dr. Tan, your weside is really helpful. Thanks once more gain.

          • Hi Confused,

            I am glad you find us helpful. Please help us spread the word.

            rgds

            Dr Tan

          • Confused

            Sory Dr Tan, do u think it is a sign of HIV?

          • Hi Confused,

            Do I think what is a sign of HIV?

            rgds

            Dr Tan

          • Confused

            Do u think the small pimple that later look like a lesion although now is drying up is a sign of HIV? But to be honest with yout Dr, i have a lot of anxiety going on and every little thing i see on my body tringer me. Even though i was assured by my Dr. that i am fine and need not to worry.

          • Hi Confused,

            So if you fall down and break your leg are you going to blame your broken leg on HIV also? You are going to have to draw the line somewhere. Also, I cannot diagnose anything over the internet. You should see your doctor and find out what this ‘small pimple’ is.

            rgds

            Dr Tan

          • Confused

            Hi Dr. Tan,
            Lol… thank you very much for clearing my confusion.
            Keep well.
            Thanks and kind regards,

  137. Hello doctor!!!

    It’s me again! Sorry abt it, I’ve Juz got this question suddenly pop out of my mind giving me the kind of fear again. please help by clearing my doubts!!!

    My questions are

    1 what is the LATEST timing where antigen might 1st appear? I have read online that antigen appear as early as 2 weeks.

    2. But will there be any possibility that antigen will 1st appear after 1 month, 2 month, 3 months or even 5 months after exposure which might cause my ag/ab test to be negative Becoz it is still undetectable?

    Becoz I have prolong pain and itch everywhere especially at the lymph node area! i have experience every symptoms of HIV. Though some have recover, but some still in me. Please help me by clearing my doubts. Thanks alot!

    • Hi Small small,

      I am not going to answer your questions. They are ridiculous and pointless and really just a manifestation of your paranoia. The very fact that you are still worried about HIV demonstrates that what you really need is to see a psychiatrist. As for your symptoms, please go see a doctor and find out their cause. You’ve got to pull your head out of this HIV trap before it really starts to affect your life.

      Rgds

      Dr Tan

  138. DR tan, thanks for your website. It is the best informative website that I have seen in all of my searching. No bias and just good information.

    I have been dealing with extreme anxiety over a low risk exposure to HIV. I took the Clearview complete at rapid HIV test at 17 days and the Abbott’s ARCHITECT HIV Ag/Ab Combo at 25 days or including the day of exposure at 26 days.

    How accurate is the duo test at 25 days? 95% I would imagine at 25 days past exposure that your body would have enought P24 to come up on a test. Can I breath or do I need to retest at 28 days

    Thanks for your help and service?

    • Hi Zak,

      Technically the combo test should be accurate from 21 days post exposure. I really do not think you have HIV. However, I personally am more comfortable with a combo test done at 28 days. That is just my personal view.

      Rgds

      Dr Tan

      • Thanks Dr Tan,

        Should I get the rapid test again at 6 weeks to have a better conclusive test or get the HIV combo test at 30 days?

        • Hi zak,

          Both are good. However, most health authorities still recognize 3 months as the window period for antibody tests and not 6 weeks. So your choice is actually between a combo test at 1 month or an antibody test at 3 months. Both are done as rapid tests in my clinic.

          rgds

          Dr Tan

          • Dr tan I just re took the Abbott’s ARCHITECT HIV Ag/Ab Combo today at day 30.

            Can I consider this conclusive that I dont have HIV?

            Thanks for your services

          • Hi zak,

            Yes it is conclusive.

            rgds

            Dr Tan

  139. hi doctor tan,i would like to know,i was exposed to oral sex with an unknown person,i want to do the p24 combo test as i want to get it out of my mind fast,can i just walk in and say i want to do or do u decide what test is best for me.if you decide on what grounds do u decide and if i come on the 27 to 28 th day, would there be any difference in the combo test result.and if the test comes out negative,do i need to get the test repeated again or it is confirmed i am negative?this is the combo test and it and when do i get the result.thank you sir,i just want to prepare myself before i go.i cant wait for 3 months as i will be going away to another country and i dont trust the doctors there.that is why i want to do a combo test.

    • Hi levi,

      We are a walk in clinic. You can come anytime during our opening hours without an appointment. I will advise you on what test I feel is most appropriate based on your exposure history. If you wish to have a conclusive result at 28 days exposure, the most appropriate test will be the combo test. The combo test that we do takes only 20 minutes to get results.

      rgds

      Dr Tan

  140. Thank u sir.do i need to get the test repeated if i am tested negative for hiv at 28 days with thep24 combo test?

  141. Hi dc.i just spoke to a lady fren.she wants to know if she does the p24 combo test at 28days,is there a chance that she gets a false positive as she is pregnant and false positive cn happen in pregnancy?and can a pregnant woman do the test?

    • Hi levi,

      Pregnant women defnitely can and should undergo a HIV test. In fact, HIV testing is an ‘opt-out’ test for pregnant women in Singapore. You are right that pregnancy increases the chance of false positives but this is not significant and really there is nothing we can do about it.

      rgds

      Dr Tan

  142. Hi Doc
    Appresiat your kind service it’s really helpful
    Actually on 13.1.2012 I cal a Chinese female massager to my home she was looking weak and before start to massag me she start scratching my body by a plastic item which was painful Iater I check with my friend they said there is a story a person got HIV like this my question if my body was scratch and the fresh blood or fluid on his hand tach my body what is chanc to get HIV secnd I did the HIV ab&ag EIA method at 3 & 4 weeks how accurate are these and are those test ar duo
    The test I have don in Dubai

    • Hi Naser,

      It is not possible to catch HIV this way. You should be more worried about Hepatitis B, Hepatitis C and Syphilis. Furthermore, Duo tests are accurate at 4 weeks post exposure. When you said ‘there is a story a person got HIV like this’ is it a rumour you heard or is it a validated scientific report? If it is a validated report, please share it with us. I would be very interested to read it. Thank you.

      rgds

      Dr Tan

      • Just I heard from friend
        What about test in Dubai
        why I worried because after four week I got soar troath headecth & rash on my body
        Thanks DR for your kind response you are wonderful dr and sorry for my bad english

        • Hi Naser,

          I cannot comment on testing in Dubai as I really do not know the medical system there. I think you should see a doctor about your symptoms rather than worrying about HIV. Our new forum launching soon will have an Arabic option. Hopefully that will be better for you.

          rgds

          Dr Tan

    • Dr
      Is HIV ab&ag is duo
      & how is test in Dubai compare with there
      Thanks

  143. hi dr.tan
    i have HIV Ag-Ab screening (CMIA)-NON REACTIVE
    after 14 days of exposure..

    is it conclusive?

    14days before i have protected vaginal sex but have unprotected oral sex..

    do i need to test for more?
    thank u..

    • Hi PHIL,

      Your risk of contracting HIV from protected vaginal sex and unprotected oral sex is miniscule. A Combo test at 14 days is NOT conclusive but very indicative. You definitely need to test again but the chance of subsequent tests being positive is extremely low.

      rgds

      Dr Tan

      • thank u for the reply doc..

        its almost 24weeks now..
        what test will be the most appropriate?

        i hope everything will be allright..

        ty

        • another question doctor..

          what do you mean by NOT conclusive but VERY indicative?

          thank you again :-)

        • Hi PHIL,

          At 24 weeks you just need a HIV antibody test.

          rgds

          Dr Tan

  144. Hi Dr.

    I am planning to married soon but i have some advise or reassurance from you.

    I have a protected vaginal & unprotected oral sex 3 months ago. Below is my test result:

    4th weeks P24 antigen test – Negative
    4th Weeks Finger prick antibody test – Negative
    6th weeks elisa antibody test – Negative.

    Is all the results are conclusive? should i move on?

    • Hi kb,

      You need to repeat the HIV test at 12 weeks post exposure.

      rgds

      Dr Tan

  145. Hi Dr Tan,
    I had unprotected sex

    I did many test
    First one after exposure 25 days..
    I have HIV 1&2 Abs+p.24 the result was 0.20 non reactive this test by fourth generation
    The same day I had pcr RNA the result was negative
    After 42 days I had HIV 1&2 Abs+p.24 the result was 0.323 non reactive this test by third generation
    After 52 days I had HIV 1&2 Abs+p.24 the result was 0.11 non reactive this test by fourth generation
    I have to retest again

  146. Hi Drtan,
    I had unprotected sex

    I did many test 
    First one after  exposure 25 days..
    I have HIV 1&2 Abs+p.24  the result was  0.20 non reactive this test by fourth generation 
    The same day I had pcr RNA the result was negative
    After 42 days I had HIV 1&2 Abs+p.24 the result was  0.323 non reactive this test by third generation 
    After 52 days I had HIV 1&2 Abs+p.24  the result was   0.11 non reactive this test by fourth generation 
    I have to retest again 

    • Hi fofo,

      No you do not need any more tests.

      rgds

      Dr Tan

      • Dear dr Tan
        I saw your answer for one who asking about
        HIV (1&2 AB /P24 Ag)Combo NEGATIVE After 49 days
        You said for him he should retest after 3 months by antibody
        In my case you said you do not need any more test. I understand from your answer because PCR RNA which I had in 25 days
        in my case I have to retest after 3 months by antibody
        I’m so scared
        I’m so soory to asking again

        • Hi Fofo,

          Every case is unique and different. What I say is only my opinion and NOT medical advice. If you are going to repeat your question after every case you read then there will be no end. Please see your doctor for a proper consultation.

          Dr Tan
          Check out our new forum at http://www.askdrtan.com

  147. -unprotected sex-withdrawal method ao first week of Dec.2011..
    -unprotected sex without withdrawal on Dec.14, 2011…then
    HIV test January 24, 2012- NON-REACTIVE… i do not know if they used combo, but they extracted 5ml of blood. can I move on w/my life?thank you

    • Hi skype,

      If ‘they’ extarcted 5ml of blood and sent it to the lab, very likely they did the ELISA test. 24 Jan is 5 weeks from your last exposure on Dec 14. This makes the test very accurate but NOT conclusive. You should have a HIV test repeated at 3 months post exposure. That said, the chance of the 3 month test being positive is extremely low.

      rgds

      Dr Tan

      • dr.tan, may i repeat my case, my first unprotected sex withdrawal method was on Dec.5,2011 then no withdrawal on Dec14,2011. they did HIV 1&2 on January24,2012 as NON-REACTIVE…again, is it Conclusive?hank you and sorry for repeating it. and do my menstrual period will interfere hiv result?thank u

  148. Hi Dr Tan,

    I had a sexual encounter on Feb 10th, with someone I had a long term relationship several years ago, but don’t know what she has been up to after we broke up.

    Following this encounter, in 1-2 weeks I developed some symptoms which looked like Acute HIV infection. Such as; two times of heavy, I mean HEAVY night sweats, heavy enough to make me change the sheets, not to mention my clothes; random rashes of several different types on my hands, legs, belly; some skin problems in my mouth, white/creamy stuff on my tongue, muscle/joint pain and an EXTREME fatigue. These could not be my mind playing tricks on me because of anxiety, because simply I was not anxious. I wasn’t relating any of these symptoms with the encounter I had, it was someone I knew for years after all. I didn’t even know something named “Acute HIV infection” existed until 1 week ago, when I bumped into it after google’ing my symptoms. (I now know that google is the arch-enemy of any individual when it comes to self-diagnostics.)

    Anyway… Most of these symptoms are gone now except muscle/joint pain and rashes, which are also diminished significantly. Never had high fever or lymph node anomalies during whole process, as a sidenote, if it makes any difference.

    Yesterday was the 30th day after the encounter and I took the “4th Generation VIDAS HIV Duo ULTRA P24Ag/AB” test, and everything was negative. I still had my doubts but I’m quite confident now that I have read every single message on this forum and seen that you mentioned countless times that this result is conclusive.

    I have three questions:

    1) I believe you have very good reasons being this confident about the results of this Ag/AB duo testing. Why do you think some people, even professionals like you disagree and insist on an additional 3-month ANTI-HIV test to be conclusive? Just being unreasonably cautious, or?

    2) Given my symptoms, are you still confident that I am HIV-free, or would you advice a further AB testing at 3 months too?

    3) Curious about the test itself: I understand p24 Ag level starts to rise shortly after infection and peak around 3rd-4th weeks and then start to drop. On the other hand, AB levels are not high enough to be detected until 4th week (some documents claim 6, even 12 weeks). Couldn’t be a brief period when Ag level has dropped to undetectable levels and AB is still not high enough to be detected also? Could you give a little bit of detail about the logic behind this test?

    Best regards and thanks for all your effort here!

    • Hi rallph,

      1. The evidence for Ag/Ab testing is not as robust as antibody testing. Historically, antibody tests were the first tests developed for diagnosing HIV. Even so, the science for antibody testing has come so far along that most physicians and health authorities are beginning to accept the fact that 3rd Gen ELISA tests are conclusive at 6 weeks. However, policy always lag behind science. We have to give the politicians time to wrangle among themselves before they see the light. 2. You symptoms sound a lot like Influenza. My opinion is that you are HIV free. 3. Ag levels rise rapidly and peak at about 1 month. You are absolutely right. Ab levels rise and as this happens, the Ab supresses the Ag which falls. 3rd Gen ELISA tests can detect the IgM Ab which develops as early as 2 weeks post infection.

      rgds

      Dr Tan

  149. Dear Doctor,
    Is oraquick conlusive at 9 weeks ?
    thanks

    • Hi Mr. Big,

      No it is not. However, it is very very accurate at 9 weeks.

      rgds

      Dr Tan

  150. dr.tan, may i repeat my case, my first unprotected sex withdrawal method was on Dec.5,2011 then no withdrawal on Dec14,2011. they did HIV 1&2 on January24,2012 as NON-REACTIVE…again, is it Conclusive?thank you and sorry for repeating it. and do my menstrual period will interfere hiv result?thank u

  151. from dec.5(Withdrawal method)- it is 6weeks and 4days
    from dec.14( w/o Withdrawal)- it is 5weeks and 4days….hiv 1&2 was done both NON-REACTIVE…is it conclusive

  152. from dec.5(Withdrawal method)- it is 6weeks and 4days
    from dec.14( w/o Withdrawal)- it is 5weeks and 4days….hiv 1&2 was done both NON-REACTIVE…is it conclusive?

  153. Dear Dr.Tan ! I did a rapid test called Determine 9 weeks after possible risk. I wonder if I can move on with my life ?
    Thanks a lot

    • Hi dasaut,

      No. Repeat a test at 12 weeks.

      rgds

      Dr Tan

      • Thanks for your reply . How big is the possibility that at 12 w my test will show positive?

        • Hi dasaut,

          Extremely extremely extremely low chance that the 12 weeks test will be positive.

          rgds

          Dr Tan

  154. from dec.5(Withdrawal method)- it is 6weeks and 4days
    from dec.14( w/o Withdrawal)- it is 5weeks and 4days….hiv 1&2 was done both NON-REACTIVE…is it conclusive? January 24, 2012 hiv 1&2- non-reactive…

    • Hi skype,

      Was my first response not clear? I already said it is NOT conclusive. Please do not keep asking the same question. You will get the same answer.

      Dr Tan

  155. thank you.may i ask why u did not consider Dec.5 as my possible post exposure?why dec14?thank u

    • Hi skype,

      We always count the dates from the latest exposure. Tests for the latest exposure will also cover any earlier exposures.

      rgds

      Dr Tan

  156. Dear doctor ! I live in Switzerland and 9 weeks after prottected one night stand did the same rapid combo test you use. It was negative and I wonder if it can be considered conclusive ?

    • Hi amics,

      No it is not but it is very accurate. At 9 weeks the P24 portion is useless. You just need an antibody test. Do this at 12 weeks.

      rgds

      Dr Tan

  157. Is rapid combo conclusive at 9 weeks ?

  158. giorgio1982

    Hi Dr Tan,i m writing from lebanon, i had unprotected oral sex without ejaculation with
    trans SW in Rome i 11/8/2011, i started feeling sever symptoms after 23 days (right time for ARS) of this incident: fatigue, joint pain, headache,swollen lymph node in left neck and both knees, i noticed two white lines in both cheeks many round of fluconazole 100 mg didn’t work, no fever, no rash, no night sweat…till now (after 7 months of the incident) i m having joint pain and the white lines inside cheeks. my testing history is:
    5/9/2011,@25 days rapid 3 gen test, @77 days Axsym ag/ab hiv combo,@ 81 days rapid test, @89 days rapid 3 gen test, @ 134
    days ab/ag test, @ 177 days ag/ab test, all negative, giving my story and my specific symptoms, what’s your assessment and your advice, thanks very much

    • Hi giorgio1982,

      Greetings to Lebanon from Singapore. My assessment is that you do not have HIV. You have had more than enough tests to confirm that fact. As for what is causing your symptoms, I am uable to tell you. For that you should see your doctor. The only thing I know is that you do not have HIV.

      rgds

      Dr Tan
      Help test out our new forum at http://www.askdrtan.com

  159. Hi Doctor,

    HIV (1&2 AB /P24 Ag)Combo NEGATIVE After 14 days
    HIV (1&2 AB /P24 Ag)Combo NEGATIVE After 49 days

    Are above results enough,or need to retest again.

    Regards,

    Hope u happy life.

    • Hi Bilal,

      You need to retest. I would recommend a HIV antibody test at 3 months post exposure.

      rgds

      Dr Tan
      Help test out our new forum at http://www.askdrtan.com

    • Hi Doctor,

      sorry for asking again.
      is any chance to change after 3 months.

      and i want to correct my first question .i did combo test at 7 weeks not after 7 weeks .

      i was heared after 6 weeks its confirmed(Combo test).

      iam so scared

      Regards

      Best wishes from my heart.

      • Hi Doctor…

        Waiting your answer…

        apprecaite your understanding always.

        Regards,

      • Hi Bilal,

        If there was no chance the result would change why would doctors advice you to get tested a 3 months? I think I can speak for most of my colleagues when I say we don’t ask patients to do pointless tests. The combo test is accurate within a 3 to 6 week window. At 7 weeks it is no different from an antibody test.

        Rgds

        Dr Tan
        Check out our new forum at http://www.askdrtan.com

  160. Hi Dr Tan,
    I had a HIV test at 27th day post exposure but I forgot to ask the doctor what kind of HIV test was it.
    The result came out negative
    on the result paper it said the type of test I tested is “Serodiagnostic H.I.V. 1 et 2″
    Can you please tell me what kind of test is H.I.V. 1 et 2?
    Is it the Ag & Ab or just the Antibody itself?

  161. Dear Dr.

    i have done DUO HIV 1&2 AB and P24 AG by ECLIA method after 9 weeks and 3 days the result is negative i know everybody will say test after 3 months (90days ) couldnt wait till that time …my question is my test conclusive? do i need to retest ?
    many thanks

  162. Urgent!

    Hi doctor, hopefully can seek your assistance and advise. Was having a flirt with a PRC on 17Feb and so far 4 weeks gone. I’m forcing myself to wait the window period but it’s too long. Kindly advise me what test to request when I talk to the pathologists. Rapid HIV and syphilis? Thank you.

    • Hi Urgent!,

      First of all don’t post anything urgent on the Internet. Secondly and equally as important, you should see a doctor. You should NOT see a pathologist and request for your own test. This platform is not a substitute for medical consultation.

      Rgds

      Dr Tan
      Check out our new forum at http://www.askdrtan.com

  163. Hi Dr. Tan :)

    Is Hiv1,2 Abs same like Antibody test?

    Coz i do the Hiv1,2 after 135 days ( NEGATIVE ) and P24 cobo after 93 days ( NEGATIVE )

    Is both test conclusive ?

    thank you

  164. Hi Doctor

  165. Hi Doctor.

    Thanks for your helping all people needing answers about hiv.

    My questions are

    1-how we know if one give blood to any blood bank is have hiv,and he/she lets say in 7 weeks
    So combo test not accurte hiv antibodies test not accurte also.
    MAYBE they will use his blood for emergeny situation

    2-Chances to catch HIV ONLY with unknown status within 5 minutes without condom.and is hiv virus is very hard to catch especially from female to male .

    Regards,

  166. I wonder

    Hi dr tan,

    I have a unprotected insertive vaginal sex about 3 months ago. I have did Rapid fingerprick Blood HIV 1/2 P24 antigen/antibody combo (HIV duo test). How conclusive is that? How accurate is this test at 3 weeks 3 days when I tested?

    Rgd I wonder

  167. Dear Doctor!

    I was tested for HIV two months after exposure. The testing site was using a Siemens advia centaur system. The test came back negative. Is this conclusive or should I repeat testing. Please let me know

  168. Chong HOng

    Hello DR . Tan!

    First of all thanks for providing your valuable professional feedback. I believe through your answers you have become famous in Hong Kong as well. Anyways I wanted to ask you regarding HIV. I did an elisa test (3d generation) alongside with my girlfriend 2 months and 13 days after my unprotected intercourse. The result came back negative. However because I am an OCD sufferer I want to test again at the 3 months interval. What I have found through my research though is that Australian, European and Massachusets HEalth department (which is probably the best in hiv research) have told the patients that an antibody test is conclusive at 6 weeks. There is no reason for a healthy immune system to not seroconvert. The only way they want you to test at 3 months is because sometimes patients have done chemiotherapy or transplants which affect the immune system. Now they sound pretty authorative however the us government cdc website still recommends a 3 months interval. From your professional opinion do you think me and my girlfriend will test positive even though we tested after 2 months. I am scared to death because I am hypochondrich. I have not been sleeping and searching internet everyday. I even hesitate to get tested at this point. Please doctor give me an opinion. God bless you and your family. regards from Chong

  169. Hello doctor if I have an ucler and share drink wih a HIV postive ppl and the person also have an ucler what is my risk of catching HIV we share drink using the same straw.

  170. zaman9595

    Hi doc
    I did the P24 ab.ag combo after 17days,and then after 24 days, ho reliable are these dates?

  171. Joe Bloggs

    Dr Tan,

    After 477 comments I see you are very committed to your work I would like to thank you and congratulate you on this.

    About the above discussed combo test; what is it’s level of availability worldwide?

    I am approaching 4 weeks post exposure but am currently working in Kilimanjaro Tanzania. I am anxious enough to be prepared to travel to Nairobi or Dar es salaam. I am struggling to find information on the availability of the combo test. Please advise on the likelihood.

    • Hi Joe Bloggs,

      I’m afraid I really do not know much about the availability of the Combo test in the part of the world you are in. Perhaps you can check with the big hospitals or the local health authority.

      rgds

      Dr Tan

  172. need answer pls pls

    hi doctor thanks for your help >>>
    i did my hiv 1 and 2 test abs+ ag the result was not reactive that test was after 55 days after exposur!! my main question is that i am carrier for HBV is that will effect on the result and is this enough time for the test
    thanks a lot doctor

  173. mido...

    hi dr.i did p24 combo test after 16 days, 21 days, 28 days. 60 days. and all results are non reactive…all are negative….are this tests are conclusive..or not….thank u dr. for ur help

  174. Dear dr tan
    I wanna thank about your great effort that you do of helping pepole

    I wish you help me in my case

    I had sexual activity with transexual,just rubbed my c**k from behind and i dont remember if it goes inside or not, that was 28 aug 2011 then i dont have any symptom just two weeks ago i begin to have sweat during night abd small red dots its come and dissapear,so i went make on 16 march 2012 hiv combo test and it come un reactive
    Hiv 1 abs non reactive
    Hiv 2 abs non reactive
    p24 ag non reactive
    So is this result accutate plz notice that this was my first test after expouse
    Waiting for ur replay

  175. mido...

    hi dr.i did p24 combo test after 16 days, 21 days, 28 days. 60 days. and all results are non reactive…all are negative….are this tests are conclusive..or not….thank u dr. for ur help

  176. mido...

    hi dr.i did p24 combo test after 16 days, 21 days, 28 days. 60 days. and all results are non reactive…all are negative….are this tests are conclusive..or not….thank u dr. for ur help….waiting fo ur reply dr.

  177. Confused

    Hi Dr,

    It is me again, i went to see my Dr regarding the pimple that i had and i was given fungal infection treatment… Now i am sooo woried as it is said that fungal infection is a sign of HIV infection.. Is that true? and what was fungal infection associated with before HIV came into being?? I am really worried now although i only have one of that sign.

    thanks a lot.

  178. Indiaxyz

    Hi Dr Tan Greetings!!

    I had done AB and AG (1+2) test done 71 days post exposure and the result is negative. I wore 2 condoms and none of them broken but as this I feel her vaginal liquids touched my body.
    Can i take the negative result as conclusion.

    Thanks

  179. Hi Dr
    Can you tell me if a HIV antigen/antibody combo test in Australia is conclusive at 28 days. I’m not sure if the antigen is P24, but I would assume so.

  180. Hi Dr
    Further to my comment above, I have now been told that the antigen/antibody test used is probably not P24. Would the test still be conclusive at 28 days? It is still a Combo.

  181. mido...

    hi dr.i did p24 combo test after 16 days, 21 days, 28 days. 60 days. and all results are non reactive…all are negative….are this tests are conclusive..or not….thank u dr. for ur help….waiting fo ur reply dr

  182. hello dr.. if hiv 1 and 2 Ab/Ag Not Detected meaning..

  183. Innocent

    Greetings doctor. I am extremely worried bout my partner and my condition. We had unprotected sex on 14/4/2012. A week later, I start to have flu like symptoms such as runny nose, headache, sore throat and coughing. I went for doctors and given some medicines, but finished and still have the runny nose. We went for HIV antibody test on 25/4/2012 (11 days after the unprotected sex), and my result shows I am negative. But, my partner’s result still pending as according to doctor, there’s some uncertainties in the test and they need to run for detail tests. Doctor never explain in detail of the uncertainties.

    With the symptoms that I have and the results I obtained from the test (negative), I am still worried that I am infected with HIV. For your info, my partner’s ex is a playful guy and they have had unprotected sex all the while. And the worry is getting worse with his pending test result. He had actually went through a HIV antibody test 2 months ago and it’s negative. So, we are confused with the pending test result.

    Am I risked with HIV virus and my test result is accurate enough to determine whether I am infected? If not, is there any test that I can carry out on the spot because I can’t wait for the 3 months window period. It’s torturing. I hope you can help me with the doubts and show us some guides.

    Appreciate your reply. Thanks

  184. PlzHelpMe

    HI Doctor i did a hiv combi test by eclia Ag/Ab at 29 days and 34 days all came negative .Tell me now what should i do

  185. Hi Doctor,

    Recently I have done this test:HIV I & II ABS+ P.24 AG and the result is: 0.13

    and the HIV Interpretation result is: Non reactive

    What does this mean?

    Thanks and regards,
    Ali

  186. seyha

    Hi dr tan ,i want to aks you that i was tested p24 combo ab-ag test 15 days after exposure and got NEGATIVE result and second test 30 days after exposure.is it accurate?or i need other test later if should when? this these test describe above how much percent?thank you

  187. Mario

    hello Doctor,

    I need to do a test and in my clinic they use VIDAS HIV Duo met.ELFA (4th generation).
    I was told the best time to do the test is between 14-28 days after risky situation. Can you confirm it? i want to do this as soon as possible.
    thanks for reply and greetings from poland.

  188. Dear DrTan, i have had a one second exposure with a Belgian prostitute (torn condom). Have been totally freaking out for 5,5 weeks, suffering extreme anxieties and fatigue. Now had a rapid duo test at Belgian helpcenter, seems extremely sensitive last gen test, at 10 and 39 days post exposure, both negative. Helpcenter claims test accuracy at 6 weeks at 95%. I do assume this is rather conservative? As for my immunesystem, last bloodwork at ten days post exposure showed a lympho count of 2120, this is a low to normal value and I don’t think I am immunodepressed? Therefore, would u consider the 39 day test to be conclusive or not quite yet due to my persisting fatigue (no fever)? Thanks so much for your reply. KRIS

    • drtan

      Hi Kris,

      Please post your question on http://www.askdrtan.com

      rgds

      Dr Tan

      • mrVietNam

        Hi Dr Tan
        Sory, I Use English not good.
        I have risk 33 days ago, I test HIV by method combo and results is negative S/CO = 0.33. I used PeP for 3 day. I should test again??

  189. mrVietNam

    sory i can’t register forum http://www.askdrtan.com.
    please reply to me here thanks!!

  190. Hello Doctor, I have a sexual contact after 1.5 / 3 / 4.5 weeks Speter combo test done every three true negative test should I do worry about a thank you to have HIV test outcomes are conclusive?

    Thank you for the response from the turkey.

  191. Hi dr tan
    , i have done the p24 Ag/Ab (HIV 1+2)combo test At 28 and 57 days and both result came negative My Q is : is it accurate ?

  192. JJJJJJJJJJJJJJJJJ

    Hi Dr,
    I have tested HIV ab & ag and the result was nonreactive S/CO nonreactive
    But there were commands which say [ The HIV-ab reactive result by EIA method should be comfirmed by HIV-Western both]
    What dose this mean?

  193. JJJJJJJJJJJJJJJJJ

    Hi Dr,
    I have tested HIV ab & ag and the result was nonreactive S/CO nonreactive
    But there were commands which say [ The HIV-ab reactive result by EIA method should be comfirmed by HIV-Western both]
    What dose this mean?

  194. hi doctor , i did HIV test in mauritania it cost like 35 USD and the report show the contecn below , sorry its in french but im sure you can identify :

    serologie du HIV :
    first determination :
    EIA biomerieux France

    AC anti HIV 1 & II : negative

    index
    this test is based on the detection combination of antigene P24 of HIV I and IGG antibodies of HIV 1 And 2 .

    could you please explain what kind of test this is and if it is conclusive after 45 days ..

    thanks DR

  195. hello Dr
    Is analysis of HIV p24 Ag abs (HIV Combo) incised after six weeks

  196. i have tested p24ag/ab after 6 days, 14 days,and 22 days of exposer. all tests are negative and non reactive. these tests are done in india. am i safe? PLZ HELP ME DOCTOR.

  197. hi doctor, gaur here, sir you said that in 3 weeks p24 ag/ab detect virus. is any thing else? plz help me more information.sir written on my test report, the range ag/ab is lsss than 0.25 is negative for both hiv 1 and 2.
    my report is FOR HIV 1.
    6 days;ag/ab-0.1/0.2(NON REACTIVE)
    16 days;ag/ab-0.6/0.8(NON REACTIVE)
    22 DAYS;ag/ab-0.0/0.1(NON REACTIVE)

    FOR HIV 2.
    6days;ag/ab-0.0/0.1(non reactive)
    16days;ag/ab-0.1/0.1(non reactive)
    22days;ag/ab-0.0/0.0(non recative)

  198. hi doctor, gaur here, sir you said that the time period of 3 weeks p24 ag/ab detect infection. plz help me more information.sir written on my pathology test report-the normal range of p24 ag/ab is less than 0.25 is negative for both hiv 1 and 2.
    my report is FOR HIV 1.
    6 days;ag/ab-0.1/0.2(NON REACTIVE)
    16 days;ag/ab-0.6/0.8(NON REACTIVE)
    22 DAYS;ag/ab-0.0/0.1(NON REACTIVE)
    FOR HIV 2.
    6days;ag/ab-0.0/0.1(non reactive)
    16days;ag/ab-0.1/0.1(non reactive)
    22days;ag/ab-0.0/0.0(non recative)
    sir it is a complicated method test?

  199. Hi Doctor,

    Just need to ask that HIV 1 & 2 + P 24 is conclusive and reliable after how many days?
    I got a negative result for HIV 1 & 2 + P 24 and all the STD’s test after 30 days of unprotected encounter.
    I will really appreciate if anybody will really guide me.
    Are the above tests are conclusive?

    • HI Raj Verma,

      In my opinion the combo test is conclusive between 4 and 6 weeks post exposure. However you should also check with your local doctors. Please post any follow up questions on http://www.askdrtan.com

      rgds

      Dr Tan

  200. oussama

    Please, i had a contact 2 june with a condom (but i think doesn’t resist i’m not sure). I did two test the first 24 days after (negative value 0.07), the second 52 days after (negative value 0.08) both are with elfa vidas technics searching for antibody HIV 1 & 2 and antigene. Please i want to know the result is definitive? should i wait 3 months (i have a stress and insomnia). the results what they mean? think you

    • Hi, I’ve replied your post on the forum. Please check the answer there.

  201. Dear Dr Tan,

    How much does the Duo Test cost and is it the same price for anonymous and non-anonymous tests?

    Thank you

    • Hi Dave,

      Duo $200 + 7% GST = $214. Same price for anonymous and non-anonymous.

      rgds

      Dr Tan

      • Dear Dr Tan, thank you for the reply.

        Can you tell me would a Duo Test be considered conclusive at 4 weeks post exposure and if not how about 6 weeks post exposure?

        Thank you in advance for your consideration.

        • Apologies, one more question if I may!

          The Duo test, how long does it take to get the results?

          Thank you again

  202. hi Dr tan ,

    I recently have a session with a gal but with protection, i know i am stupid, the condom did not broke or anything. I am not sure of her background and feel unsafe.

    I have did a HIV1/2 ag/ab combo test on my 4th weeks and the result is negative. doc say i can test again on 3th month but i have seen on internet that it need 6 weeks to have results if i am infected.

    so does that mean test at 4th week is not a good result???
    seek you advices

  203. hi

    I did the HIV Ag/Ab and its nonreactive(negative).
    I did it 38 days after the risk.
    Is it ok?

    Thank you
    Marios

    • In my opinion it is. Please ask any follow up questions on http://www.askdrtan.com

      • Thnx for your answer. Is it conclusive??

        I took test 3rd generation ELISA syphilis, hep B, hep C 4 weeks after risk.

        I tested also 6 weeks after HBsAg, Syphilis again and Hep B, Hep C.

        All there are negative.

        Are they conclusive?

        Thank you for your help

        Marios

        P.S : sorry for no answering on your foroum but i cannot find where i can write.

  204. Worried

    Dear Dr Tan,
    I have did hiv ag/ab test in china after 3 month exposure and the result is s/co 0.09
    They have told me it’s negative , so what does this number mean 0.09 ?
    They said if s/co ratio > 1 or equal so its reactive or positive , but what i dont understand this ratio level i have got does it mean still have little bit virus on blood ? Because i know ag/ab test look for the virus it self , and also antibodies .. Does this ratio level i have got no need for other test to do in the future ? Because when i have done this test i dont know about when is the right time to do it but i have made it exactly after 3 month exposure .. And the test result they hbe gave me after 1 day from taking the blood . After i have made this test i havent make any exposure after last exposure i have mentioned .

    Thank you and best regards .

  205. hi doctor,my name is avi. i am from india. i had tested p24 ag/ab test in a patho lab. test method was enzyme linked flourescent assay (elfa). reagent- biomerieux, france(VIDAS system).
    lab ref.- non reactive (<0.25).
    my report was after 11 days post exposure for hiv 1 (p24 ag/ab)-0.02(NON REACTIVE).
    for hiv 2 (p24 ag/ab)-0.01(NON REACTIVE)

    AFTER 18 days post exposure for hiv 1(p24 ag/ab)-0.2/0.8(NON REACTIVE)
    for hiv 2(p24 ag/ab)-0.01(NON REACTIVE).

    AFTER 30 days post exposure for hiv 1(p24 ag/ab)-0.06(NON REACTIVE)
    hiv 2(p24 ag/ab)-0.01(NON REACTIVE).
    sir am i safe? tests are conclusive?
    i am very fearing. please help

  206. hi doctor,my name is avi. i am from india. i had tested p24 ag/ab test in a patho lab. test method was enzyme linked flourescent assay (elfa). reagent- biomerieux, france(VIDAS system).
    lab ref.- non reactive (<0.25).
    my report was after 11 days post exposure for hiv 1 (p24 ag/ab)-0.02(NON REACTIVE).
    for hiv 2 (p24 ag/ab)-0.01(NON REACTIVE)
    AFTER 18 days post exposure for hiv 1(p24 ag/ab)-0.2/0.8(NON REACTIVE)
    for hiv 2(p24 ag/ab)-0.01(NON REACTIVE).
    AFTER 30 days post exposure for hiv 1(p24 ag/ab)-0.06(NON REACTIVE)
    hiv 2(p24 ag/ab)-0.01(NON REACTIVE).
    sir am i safe? tests are conclusive?
    i am very fearing. please help
    sir i need some more tests or every thing is ok?

  207. sir i need some more tests or every thing is ok?

  208. Dear Dr Tan,

    I have made the HIV-Combo test (antigen p24 and antibodies) in Germany on the 22-th day after the exposure.The result is negative.Do I have to repeat it again?

    Thanks,
    Regards,
    Alex

  209. lidoboyz

    hi doctor…

    I have done unprotected anal sex several times two months ago.i do the hiv rapid test twice in a week and the result is negative.However i feel very fatique and i got some wart on my tongue and also some ulcer in my mouth.I guess it is a candidialisis.my head always sweat.Is the result after two months is accurate enough?is the result would change after three months?am i have a high risk to got hiv positive?help me please..

  210. sir p24 ag/ab for(hiv 1 and hiv 2), is reliable test after 30 days of post exposure.

  211. Doctor Tan.

  212. Sorry for my english i’m italian
    I’ve had unprotected vaginal intercourse.
    After 31 days I have made ​​two separate tests with two samples of blood.
    One test in hospital HIV 1/2 AB 4 generation without p24 antigen ‘only antibody’ and one test private laboratory test hiv 1/2 antigen p24 ‘only antigen p24′.
    Is the same duo combo or test? or not? Has not been made the simultaneous search of ab / ag but two separate tests. I hope it’s understood my problem. However, the tests are negative.

    • Technically what you did is not called a duo or combo test because the tests were not done simultaneously. But for practical purposes, it is the same. In other words, you can be sure you do not have HIV. For follow up question please post on http://www.askdrtan.com

  213. Dear Dr tan,

    I had protected vaginal sex a week ago with a sexual worker. I would like to check regarding the P24/combo test. If i were to do that at your clinic, what is the window period? and, if the test were to be negative, would it be conclusive after the first test?

    Regards,
    Jeff

  214. Dear Doctor,

    I had a single act of vaginal sex with a CSW in Oman, it was protected sex but the girl replaced the first condom with a second one (The first one was intact). We had sex with the second condom and she gave me a handjob. However, it tore, though the top flap didnt come off.

    I think it must have torn during the handjob, but I wasnt sure, nevertheless I got myself tested at a private lab (latest equipments accredited with JCI) in the UAE with a HIV Duo test on the 27th day. I got a test result as 0.399 and Negative.

    Should I rest easy as the anxiety is killing me, the Doctor (My sample was passed to the private lab) told me that the result was only 90% accurate and that I needed a 3 month test.

    Sorry for the long mail, my question is Are labs accredited by the JCI reliable??

    • I cannot comment on the credibility of your lab. You should listen to your doctor’s advice. I think a Duo test at 27 days i sconclusive. Please post any follow up questions on http://www.askdrtan.com

  215. Hi doc
    An hiv 1&2 undertype 0 + ag p24 (AB) on 80 days is accurate ?
    At the lab they asked for a test on 90 days .
    Please waiting for ur reply !!

  216. Doctor. Please i am waiting for ur reply the test
    Is eclia ag /ab on 80 days ! Hiv 1 and 2 and p24

  217. To be exact
    AB/ hiv 1&2 &undertype 0 + ag p24
    Is it useful doctor !? I am scared as hell !

  218. Doctor ?

  219. Hi doctor, i did a Elisa hiv test after 45 days of a posible exposer.
    I did a hiv1/2 ag/ab test, it was negativ; and i did a antigen elisa test it was negativ.
    Sheal i do the test again on 10 weeks?

  220. 10 weeks , today i did a elisa1/2 ag/ab test VIDAS and bio Merieux ant it was negativ.

  221. Hi doctor
    I did an hiv 1/2 ag/ab bi eclia after 89 days of possible exposure
    The results came back negative !
    Is there any chance that my body did not produce antibodies yet ?
    And what kind of drugs can affect the test results ?
    Plz i am waiting for your reply !
    Thank you .

  222. Oh and one more thing
    The lab said that the test is 4th generation
    Is that good ?
    Thank you !

  223. hi dr.tan
    I have done unprotected vaginal sex for 3 min 6 weeks ago.
    I did many test
    First one after exposure 11 days..
    I have HIV 1&2 Ab+p.24 ab(?) the result was negative (what is a p24 antibody test? it`s wrote on my test name!!!
    After 18,24,31 days and 6weeks I had HIV 1&2 Abs+p.24 ab the result was negative
    1) Is this conclusive? 2) Is there any chance of this changing to positive? 3)what is my test name?
    i have a problem in my cbc test . my wbc is 8.27 *10^3 and neutrophils is 2.80*10^3 (33.8%) & lymphocytes is 4.28*10^3 (51.8%).Do you think it is related to being infected with the hiv virus?

  224. Doctor u have no oppiniom about my questions ?

  225. worried5

    dr.
    i had a wound at testicles ballon of razer and had received oral sex without condum followed by vaginal sex with condom.

    after 2 weeks i had mouth ulcer and dry mouth follwoed by stomok pain, loss in weight to 6kg fllowed by red rashes on skin which vanishes after 24 hours. complain mussle ache and joint ache, however was only for 20 min in diffrent part of body. there is frequent pain in my mussles near neck however lasts for 10 min only.

    post 8 weeks of exposer i did p-24,rna and duo test which all came to be negative.

    can these tests said to be conclusive? Do i need to repat the test post 90 days?

    pls guide.

    Regds

  226. Really worried

    Hi doctor
    I had the following tests:

    Combo test after one week.
    Pcr test after 26 days
    Combo test after 9 weeks
    Combo test after 12 weeks.
    Combo test after 14 weeks
    Combo test after 22 weeks.
    Combo test after 7 month.

    The results were all negative. I started having swallen lymph nodes after 3 months of exposure, would this be related to being infected?

    Do i need to retest for hiv 1&2?

    Please advise and thank you in advance

    • I think you tests are conclusive. Please see your doctor about your swollen lymph nodes.

  227. Hello doctor !
    I took an hiv 1&2 ab/ag p24 by eclia after 88 days
    Of possible exposure ! The test came back negative !
    Can i woo-hoo ?!?!
    Is eclia 4th generation test is enough ?
    And what can affect the test results ?
    Sorry to bother you and thank you !

  228. Doctor Tan,

    I had an exposure 8 weeks ago.

    On the 25th day, I had a finger prick test (antibody) and a p24 antigen blood test sent to the lab. They did not have combo tests at this clinic. Both were negative.

    How conclusive is that regardless of risk of exposure?

  229. hi, doctor tan, i had protected anal sex but although this fact i was infected with genital herpes.How reliable is my negative ELISA duo test at 34 days and rapid test at 10 weeks-also negative. May co-infection with genital herpes retard the producing hiv antibodies.

  230. Dear Dr Tan,

    I have had unprotected virginal sex with a prostitute on 21/9 and the past month i experienced diarherra(up to 2weeks), stomach ache, cold, and constant headache. Im not sure if these symtoms are caused due to my psychological reaction in thinking about the HIV. I have done a quick finger test with the prostitute and it is negative. On top of that, i have also done a finger test after 4 weeks of explosure and a HIV combo test (antigen and antibody) after 5.5 weeks of explosure, which was on 31/10. The results are also negative. How likely m i going to catch HIV? and if not, what are causing these symtoms to be happening? Thank you very much doc your advise is much appreciated.

  231. Dear Dr Tan.

    I had a very risky sexual relation 3 days ago and I would like to know what’s the difference between A PCR (polymerase chain reaction) NAT (nucleic acid test) and a 4th generation HIV ELISA test (HIV p24 antigen + HIV-1/2 IgM/IgG antibody).

    With which one I can get the results faster (no more than one day) what is the window period for both of them, and the cost of each one. These 4 days have been a hell (Can’t sleep, headache, anxiety, etc) so I definitely don’t want to wait for the 3 month test because with this levels of insomnia being tired could damage my health a lot too.

    Thanks,

    Steven.

  232. Richard Kloon

    Hello Dr Tan,
    I appreciate your kind reply on my below case and thanks in advance for the time you will spend.

    On 12th September, I received protected oral from a girl in a massage place in Jakarta two times, second time I use another new condom also.
    The discharge took place while the condom still in place and while my organ still in her mouth (sorry for the expression)
    I don’t see any damage happened to both condoms but I don’t know the condom type (Durex or..etc) but i am sure that she opened new one in front of my eyes two times.

    I started having the famous symptoms we read online after around 10 days: flu, headache, diarrhea, night sweat, lower leg part bone pain, fever (38.4 max), loss of appetite, 3 kg loss, dry cough, wake up in sickness mood, wamr head during day time and disappear at night, feeling up and down, health not stable..I didn’t feel rest until now while I am writing to you.

    I did viral load PCR RNA Quantitative (>20 copies / ml) after 26 days from exposure and virus not detected. (machines used is taqman COBAS 96 – it costs me around 63$)

    I did Elisa 4th Generation at 6 weeks and half, the result is negative (cost around 20$ but i don’t know the method used)

    I redid Elisa 4th Generation after exactly 2 months and returned to be negative also.

    I did consult three specialist doctors from three different countries (Indonesian (she saw me) – Malaysian (he saw me) and Lebanese (over the phone)) and they said no need to do anymore tests, but the truth is that my body is not helping me to believe it.

    Please advise as i am married and have son, and don’t want to put their life on the line :(

    Shall I redo the test again at three months? ( I am planning to redo it at 11 weeks and at 3 months, shall i?)

    I am on business trip in Jakarta since June 2012, I often come here since 2006, I am originally from Lebanon.

    Thank you and Best regards,
    Richy

  233. Good afternoon Dr,

    I would like your honest and professional opinion. I’m a young 23 yr old male who is still a student. About 2 weeks ago, I had non protected sex with a 41year old lady from Guangzhou, China. She is highly educated and is a businesswoman who does business in various countries such as US. I know this doesn’t mean she doesn’t have HIV or whatsoever. So after a drunken night out, we ended up having non protected sex. In my drunken stupor,I did not comprehend the seriousness of my actions. So I began to get worried and I questioned her about her health status and she mentioned she is clean as she had just gone for a medical checkup prior to
    Coming to Singapore where she had a urine test, blood test, ultrasound B test etc for her menstraution problem.she mentionedher periods are irregular thus she had to undergo the test.i would like to believe that whatever she said is true. However, recently I have a slight itchiness in my pee hole and I have the need to frequently urinate.i do not have any discharge.and there appears to be cuts on the base of my penis head. And this morning, I woke up and I found I have a small swollen armpit gland. Just one of it. I also have a headache and itches all over my body but do not have any other symptoms such as flu, fever or diarrhea etc.i am beginning to be extremely worried due to the swollen
    Armpit gland as I have never gotten one before this. I’m not sure if all this is due to my anxiety or whatsoever. I tested negative for HIV just the week before I met this lady. Therefore I would like to seek your opinion as to what my issue might be.please help me!!!!

    • As opposed to my dishonest and unprofessional opinion? What kind of a stupid statement is that? Anyway, this forum is not for medical consultations. Go see your campus doctor.

  234. Dear Dr. Tan.

    Good afternoon, I am from Russia. I apologize for my English. I have a question for you. I passed the test Ag/Ab combo in 2.5 weeks, 33 days. Both negative. Can I stop worrying? how much they are authentic? Thanks in advance.

  235. Dear Dr. Tan

    Good evening. I am from Russia. Sorry for my english I have a question for you. I took the test Ag/Ab hiv 33 days after possible risk. received a negative answer. Can I no longer care? Do I have to repeat the test? Thanks in advance.

  236. Hello, doctor,

    I had contact with high risk group member and torn protection.

    p24 and antiHIV on 4th week 0.05 reference <1 negative
    p24 and antiHIV on 6th week 0.06 reference <1 negative

    Both test have comment: "Inmunoblot" test recommended.

    Please, give your opinion.

    Thank you!

  237. Hi Dr Tan,

    I was just wondering if the HIV test on the picture in this article is a positive one. The antibody (ab) area seems to be sort of red/pink. Does this mean it’s a positive test or should there be a clear band like the one in the control area?

    Thanks in advance,

    Ryan

    • No it is negative. This strip was oxidized by the time it was photographed. If it was positive, there should be a clear line in the Ab or Ag window. Please post any follow up questions on http://www.askdrtan.com

  238. I did test on 14 , 22 , 28 , 38 day all negative with hiv duotest Ag/Ab combo after protected sex .Are they conclusive ,do i need further testing or i should relax .

  239. Dear Dr one more question have you ever seen someone covert to positive after 38 day regards and god bless you.

    • Dear Dr one more question have you ever seen someone covert to positive after 38 day regards and god bless you

  240. Hi Dr,

    First I apologise for long post, just lots of detail.

    I had protected sex with a prostitute 6 months ago, before we had sex she mentioned she had leprosy (odd), she was foreign and it caught me off-guard, she said she took pills for it, it was all rather casually mentioned, I just ignored her comment. I had protected oral from her but I did masturbate her unprotected and she masturbated me unprotected. Since then I worried about STI/STDs and her comment about Leprosy just made me think did she mean HIV, I tried to contact to confirm but no response. I don’t think I’m high risk for HIV, but I couldn’t stop worrying about it all, so I went to a clinic for advice about 4 weeks post exposure. I was tested for other STI’s all negative (forgot to mention Leprosy) but was told I didn’t need a HIV test. I tried to move on but couldn’t, paranoid about symptoms, had spout of fluish symptoms but nothing majorly typically associated with HIV, but I swear cuts are taking longer to heal, hypercondriact no doubt. So now at 6 months I went for private HIV DUO test, OK the DUO was waste of money due to 6 months, again I didn’t mention Leprosy (forgot again). I’m still awaiting the result right now. The problem is I’m now worried about a false positives especially with potential Leprosy contraction possibly. The GP told me on a positive result that I would be referred for treatment, no mention of re-testing?! Am I worrying about nothing, what should I do with a possitive result, just accept it and get treated? I accept that if I’m positive thats that but it would impact my life dramatically and my marraige would end for sure, stupid one off mistakes, major life changing impacts! I cannot cope!

    Thanks

    Jim

    • First of all let’s not over-react even before you get your results. Chances are the HIV Duo test will come out negative and you will be all good. In the off chance that it turns out positive, you will need a confirmatory Western Blot test to confirm the diagnosis of a HIV infection. I am not an expert on Leprosy but I would assume it is rather rare for healthy adults to catch it. You might want to speak to an Infectious disease physician about that. Please ask any follow up questions on http://www.askdrtan.com

  241. Dear Dr Tan,

    I would like to ask you if the following activities between two guys carry a risk for HIV: kissing,mutual masturbation,touching and rubbing each others bodies and genitals but without any contact with sperm.

    Thank you very much.
    Markos

  242. Dear Drtan,

    I was taking PEP for 28 days, on the 27th I did a Duo Test in a very reliable lab. I came back Negative. do you think it is conclusive?

    Would PEP make this test less reliable?

    Thanks. Gust

    • Ask the doctor who gave you the PEP. My view: very accurate but cannot be taken to be conclusive.

  243. Dear Dr,

    Your blog is very helpful. You do a great service to the community.

    I had unprotected vaginal sex with a sex worker, cannot wait for 4 weeks to test. After 17 days, i went for test,which my doctor suggest HIV(1&2)Ab+Ag p24 screen. The result is negative. Is the result accurate enough or should I repeat other tests.

    • Think about it for 2 seconds. If the result is accurate at 17 days why on earth will we tell patients to test at 4 weeks? You think we are being intentionally sadistic? Anyway, the doctor who did the test for you really should have advised you on the accuracy of the test and the need for any follow up tests. Please ask him. I really should not be doing his job for him.

      • Thank you very much Doctor, I am sorry not to tell you that my doctor did ask me to do follow up test in 6 months or a full year to really confirm. He feel that even 3 months is not conclusive. I am anxious and depress, that is the reason I post the question on accuracy for such early date. I appreciate you frankness, I would repeat this test in 4 weeks or should I do other test as well. Thanks again for you support.

  244. Hi Doctors,

    thanks you all for the truly amazing work you do on a daily basis on this forum, it truly can be a lifeline for many people such as myself that are battling to come to grips with my situation.

    47 Days ago (6 weeks) I sadly caved in and had sex with a Sex Worker in a sex club in Switzerland. It was a moment fueled by alcohol and emotional issues at home due to the lack of sex in my current 3 year long relationship with a woman I love more dearly than I can begin to describe. Naturally the guilt has been ripping me apart over the past weeks and this has taken a massive toll on me both mentally and physically, I’m an aemotional wreck.

    The occasion itself was one that consisted of portected vaginal sex, and unprotected Oral on both parts (me to her and visa versa) there was also a very short instance where she used her finger to stimulate my anus.

    My greatest concern now is that around 2.5 weeks after the contact I begun experiencing tingling sensations in my arms, hands, and fingers as well as burning sensations in both arms. I’ve had bad pain in both knees which comes and goes but the tingling in my hands and fingers is pretty much daily. During the past few weeks the only other symptoms I’ve had has been an infalmmed throat (slight ulcers at the back of the tounge) and some minor irritation under both arms. The body pains I have are generally very symetrical which is a concern. I’ve also had some diarrhea which has been on and off but not contant at all and have not experienced any high fevers at all. I am however suffering from

    I’ve done a total of 5 HIV tests now (I Know this is OTT, but it’s for my own sanity) all have been Negative up to now. The last being yesterday (46 Days post possible exposure) and it was a Duo P24 Antigen & Antibody test done at an annon clinic with the results in 20min. All the tests I have down have been that of the Duo tests. (4 week – Neg, 4 Week Neg) I’m plannng to do another on 8 weeks and then 12 weeks again.

    I’m currenty seeing a psychologist to help me through this and am on anti Depressants and relaxants to calm my depression and anxiety but my life has literally just done a 360 degree turn and I’m just lost. I’m abolutely terrified of contracting HIV and loosing my partner this to me would be the worst case scenarion I could possibly imagine.

    Can you offer me any advise on the above?

    1. are the tests I’ve done with neg results a good sign that I’m most likely not infected?
    2. why would I have these nerve symptoms continuously? I’ve read that they can be related to HIV??

    Any advise would be most appreciated.
    I will be making a donation to the site too as I think what you are doing here in providing support for people like us in these situations is vital! Thank you so much!!

    • 1. I think the tests you have done are enough to conclude 100% that you do not have HIV. 2. Most likely because you are anxious. Or it could be due to something else. Either way, it is not due to HIV. Please post any follow up questions on http://www.askdrtan.com

  245. Hello,
    Dr tan, I had a ab+ag p24 screen test 39 days after exposure, it was negative, can I presume the result is pretty conclusive? And no further testing is required?

  246. hello
    dr i did hiv 1& 2 Abs & p24 tests after 20 days the result negative is it conclusive

  247. asfaque chowdhury

    Dear sir, First of all I am very weak in English. I am from Bangladesh. I have unprotected sex with a girl on 10-09-2012 ( 85 days ago). 15-20 days later gonorrhea diagnosed. at that time i had a rash in my finger and a fever. doctor gave me 1500 mg turbocef injection and a 500 mg antibiotic Tablet for the course of 7 days. about 36 days later my serum billirubin increased at 7 and HEV diagnosed. since then I am very very worried about that and I could not sleep many many days. I got tested for hiv antibodies test in 37th day, 65th day and 84 day. all were negative. but still I have some problem in my penis and anal. I can see little liquid (like water) inside my penis and sometime my anal burn? I am poor that is why I can not afford treatment cost at now. Please sir help me.
    My question is that
    (i) is there any possibility it can turn into hiv positive?
    (ii) is there any relation between Jaundice (serum billirubin increased) and HEV?
    (iii) Is it reliable a hiv antibodies test in Bangladesh which i got in Modhumita is a USAID Foundation funding Non- profit organization in Bangladesh? Please sir help me. I still can not sleep at night and spend a normal life

    • 1. You do not have HIV. 3. By HEV you mean Hepatitis E virus? Yes of course there is a relationship between hepatitis E and jaundice. 3. I cannot comment on the reliability of the test since I am not the one who did it. Please post any follow up questions on http://www.askdrtan.com

  248. moinuddin

    Dear sir, is hiv antibodies test negative in 3 months(94 days) is conclusive with 2nd or 3rd generation antibody test? please reply.

  249. Nasser Bader

    hello doctor really i was confused i did a p24 combo blood test 35 days after the last relashioship and it was in famous lab in london called tdl i sent my blood sample and i got the result not detected is that blood test hiv 1.2 antibodies & p24 antigen combination active after 35 days about 5 weeks after exposure and what is the percentage of accuracy of p24 combo blood test after 35 days do i need to retest again after 90 days or not and what is the best blood test please let me know thank you alot

  250. hello doc tan,

    First of all thanks for this forum. I had protected intercourse with an escort on 18th Nov and with my doctors advice on 20th Dec(32 days after exposure) tested for STDs including Herpes simplex virus 2 IgG Ab, Hepatities B(HBsAG test) and HIV 1,2 with P24 4th generation test. All came back negative. Please advice if I need to re-test.

    thanks.

    • Forgot to include that the lab test confirmed NSU but my gonorhea, chylamedia tests were negative. On the day of exposure, out of anxiety I cleaned the complete genital area including the penis with an antiseptic. I heard even this could cause an NSU?

      thanks.

    • No need to retest for HIV.

  251. Hi Dr Tan.

    I have a unprotected sex and after 14 days I did Hiv-1 RNA test which is working Roche COBAS Taqman system and lowest detection limit of the test is 17 copies / mL. My result is negative. After this test I read many articles and stressed so much and after 21 days from my unprotected sex I did P24 Combo test and result is
    HIV p24 ANTIJEN NEGATIF 0.00 Indeks NEGATIF 0.25
    HIV ½ ANTIKOR NEGATIF 0.09 Indeks NEGATIF 0.25

    do you think this test is enough or I must do 3 month test?
    İf ı must 3 month test what is the percentage of result is comes negative pls help me.

  252. hi:doctor
    itested
    after7 dayes(ag);neg
    after 21dayes(ag):neg
    after 25 dayes:rna pcr:no edected
    after 56 dayes(ab) elisa:neg
    after 64 ayes(ag):neg
    i have hiv?should be retest next time?

  253. hello, did abbott architect duo combo at 2 weeks. came negative. is it reliable?

  254. PEP USERS

    Dear Doctor,
    I have had my pep course for three weeks already.
    Can I do Combo test? Does PEP influence the result of antigen?

    • In my opinion the combo test now would be useless. Please ask your PEP doctor for more advice.

  255. hi Dr.tan

    Frist of all i thank for ur help !!Doctor i hav my HIV SPOT test in 6 months & 2 weeks after having oral kisses with a stragen girl !! and am having a diclofinac (antifangal tritment ) and my result is negative but am not sure did the antifangal treatment interfers the HIV test !! or the negative result is conclusive!!coz the test i do is 6 months & 2 weeks after the exposure !! thanks !!

  256. Hello Doc Tan
    Please suggest when somebody should test for HIV after PEP by
    1) Alere determine HIV 1/2 test
    2) Alere Combo test

    Thanks

    • Ask the doctor who gave you the PEP. It’s his job to advise you on such things.

  257. paranoid

    doctor,
    i am a intern in internal medicine . i got a needle prick injury on 1/1/2013.the patient turned out to be non reactive . but he was at high risk for hiv so i was started on a two drug pep regime………i had the hiv combo test on 21/1/2013 which gave index value of .07 and negative for abs…..the doctor i consulted said that at 21 days the test is nearly conclusive.
    do u agree??
    it is affecting my work so plz tell me the way forward

    • In my view the test at 21 days is very indicative but not conclusive. You should always differ to the views of your attending physician. Please follow his advice. Please post any follow up questions on http://www.askdrtan.com

  258. paranoid

    btw he also said that pep doesnt affect the testing

  259. Very Worried

    Hello Dr. Tan

    I had unprotected oral sex with a woman and I’m a bit worried… We also had protected “conventional” sex.

    Well, 29 days after, I did the Roche Modular Ag/Ab Hiv Test and it came negative. I think it’s a 4th gen test and tests for P24 and the virus, but not sure.

    Do you think my test is conclusive ? Are 29 days ok ?

    I was also tested for other DST and everything went ok.

    Many thanks !

  260. Hello Dr. Tan,

    Greetings from Brazil !

    I had a sexual intercourse with a girl using a condom, but we also had some oral sex, unprotected.

    I was tested for hiv 29 days after using a 4th gen Ag/Ab test Combo from Roche Laboratories and the result was negative. Is this test conclusive ? Could you please ellucidate me ?

    Cheers !

    • I meant P24 Ag/Ab test, sorry

    • In my view it is conclusive. Please post any follow up questions on http://www.askdrtan.com

      • Thank you for your answer Doc. You helped me a lot !

        One of the greatest problems with this disease is that there are loads of data over the internet with some very scary information, and just a few really direct and objective reliable information sources. Some places says 60 days, other ones 90 and even 45, and this is pretty confusing, and this may lend people to all forms of paranoid. Misinformation is a very bad thing.

        Thanks to professionals like you, people can have a reliable source of information.

        Keep the good work and I wish you a wonderful 2013.

      • Just one more question. Do I need to be retested ?

  261. Hi Doctor Tan !

    I have a technical question about the P24 Ag/Ab test, nothing to worry about, it’s just to know.

    One year ago, I did a test and the Reading/cutoff values were 0.19/0.9

    Last month I did a new test and the values changed to 0.38/0.9

    I was submitted to a surgery 26 days before the last test and I was using Cephalexin (infection prevention) and Azithromicin for some days.

    Is this situation something to worry about ? Could the antibiotics ruin the test ?

    Thanks for your attention !