Dr. Tan and Partners is one of the few approved Anonymous HIV Testing Centres in Singapore. A detailed write up on our service is available here.

Other STD services: Early STD Screening, Rapid Hepatitis B Blood Test, Swab for Gonorrhea and many more... contact us to make an appointment now!

Anonymous HIV Testing at Our Clinic.

In 2008, we were given the mandate by the Ministry of Health to conduct anonymous HIV testing.

Registration form for Anonymous HIV Testing. No personal details required.

Registration form for Anonymous HIV Testing. No personal details required.

Not all clinics are allowed to conduct anonymous HIV tests. This is because according to the Infectious Diseases Act, all medical personnel are required to inform MOH of the details of any person they know or suspect of being infected with HIV. Our clinic signed a gazette that is filed with the Supreme Court of Singapore to excuse us from this section of the Infectious Diseases Act. We are therefore mandated under Singapore Law to be allowed to conduct Anonymous HIV tests. Yes, it is a big deal.

We use only current first in line HIV tests that are validated and approved according to the latest International Standards.

All Our Doctors are fully certified and trained in advance HIV testing.

We use only single use and disposable equipment and are validated by MOH for Good Infection Control Practices.

Here is step-by-step guide to getting an Anonymous HIV test done at our clinic.

1. Anonymous HIV tests are conducted at our clinic at Robertson Walk.

2. You do not need an appointment. Just walk in to our clinic anytime during our opening hours.

Click Here for Contact Details, Address and Opening Times.

3. Let our staff at the counter know that you are here for the ‘3 step test’

4. You will be given a form that looks like this: AHT Registration Form

5. As you can see, the form does not require any personal details from you.

6. This form has a serial number on it : AHT####. You will be identified according to this number.

7. You will be given a pamphlet with information on various HIV and STD tests. Your serial number will also be on this pamphlet. Hold on to it.

8. When the doctor is ready to see you, the staff will ask you to go into the doctor’s room.

9. When you meet the doctor, this is your chance to ask all the questions you want to ask.

10. You should also let the doctor know if you suspect or wish to test for any other STDs.

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

11. We offer both the Oraquick Advance HIV 1/2 Test, the Determine HIV 1/2 Test and the SD Bioline HIV Combo test.

Click here for info on the Rapid Anonymous HIV Combo Test

12. The doctor will ask you a few pertinent questions then conduct the test for you.

13. You will need to wait 20 minutes for the results.

If you test Negative for HIV

1. The doctor will advise you on when to come back for a repeat test if you are in the window period.

2. This is another chance for you to ask whatever questions you have with regards to HIV or any other STDs.

3. You can then leave the clinic but please remember to come back for your repeat test if required.

If you test Positive for HIV

1. The doctor will draw a blood for a confirmatory Western Blot test. This test is also anonymous.

2. This test might take up to 2 weeks for us to get the results.

3. Because you tested at our clinic, there will be no notification requirements.

4. You can leave a contact number or email for us to contact you with the Western Blot results. Or you can contact us after 2 weeks.

5. Our doctor will then discuss with you the next steps.

6. All of this still remains anonymous.

Do not hesitate. Come for a test now.

Video on HIV Signs and Symptoms

Please post any questions you have with regards to Anonymous HIV testing in the comments section below.

Also, if you have had HIV testing at our clinic and have any feedback on our service, please also post in the comments section below.

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

Click here for Info on STD Symptoms in Men
Click here for Info on STD Symptoms in Women

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.

If not read more about HIV symptoms.

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

Your are welcome to visit Our Doctors at Our Clinics anytime during our opening hours.

Robertson Walk            6238 7810

Click Here for Contact Details, Address and Opening Times.
Click here to contact us

All prices quoted below excludes prevailing GST


Related Topics:

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.

Find the profiles of our panel of doctors.

Consultation Rapid test only $20.00
(not inclusive of test) Other STD Consultation starts from $60.00
STD screening
Standard HIV, Syphilis, Hepatitis B/C, Herpes Simplex Virus Type I and II $ 200.00
Urine – Chlamydia and Gonorrhoea PCR, Monilia, Trichomonas, NSU, Mycoplasma, Ureaplasma, Urine Culture, Candida $ 280.00
Urethritis and Vaginitis
Vaginal Swab – Chlamydia and Gonorrhoea PCR, Monilia, Trichomonas PCR, Gardnerella PCR, Candida PCR, Group B StrepNSU, Mycoplasma, Ureaplasma, Direct Microscopy, Candida, Vaginal swab culture $ 345.00
Comprehensive (Male) Blood – Syphilis, Hepatitis B/C, Herpes Simplex Virus Type I and IIUrine – Chlamydia and Gonorrhoea PCR, Monilia, Trichomonas, NSU, Mycoplasma, Ureaplasma, Urine Culture, Candida $ 390.00
Comprehensive (Female) Blood – Syphilis, Hepatitis B/C, Herpes Simplex Virus Type I and IIVaginal Swab – Chlamydia and Gonorrhoea PCR, Monilia, Trichomonas PCR, Gardnerella PCR, Candida PCR, Group B StrepNSU, Mycoplasma, Ureaplasma, Direct Microscopy, Candida, Vaginal swab culture $ 525.00
Individual STD Tests
Determine Syphilis test Rapid Syphilis Test $ 50.00
Determine Hepatitis B Test Rapid Hepatitis B Test $ 50.00
Herpes Simplex Virus PCR Herpes Simplex Virus Polymerase Chain Reaction (PCR) Test $ 200.00
Chlamydia and Gonoccocal PCR Chlamydia and Gonorrhea
Herpes Simplex Virus Type I IgG Antibody Herpes Type 1 $ 40.00
Herpes Simplex Virus Type II IgG Antibody Herpes Type 2 $ 40.00
Non-Specific Urethritis (NSU) Culture Mycoplasma, Ureaplasma $ 118.00
HIV test
HIV RNA/DNA Polymerase Chain Reaction (PCR) Test $600
Add $100 for expedited results
Rapid Fingerprick Blood HIV-1/2 P24 Antigen/Antibody Combo (HIV Duo Test) (4th generation!) $ 150.00
Rapid Oral Saliva HIV-1/2 Antibody Test (Oraquick) $ 50.00
Rapid Fingerprick Blood HIV-1/2 Antibody Test (Determine) $ 50.00
PEP $2000- $2200




  1. Hi Dr,

    Sry for the second qn asked on this forum, asking for a friend.

    She was on a public bus, and her long sleeve touched a 2cm by 1cm red stain on the wall (unsure if fresh or dry). She immediately touched her sleeve to see if it got on her sleeve, and her entire right hand (fingers and palm) came in contact with the affected part of the sleeve. Her hands were dry and peeling quite badly (with some areas red and itchy) from being overseas recently, and she wasn’t sure if she had any superficial wounds (because dry skin gets injured more easily. She would sometimes notice small red bleeding spots and not know how they happened.)

    She touched her sleeve a few times afterwards too because she wasn’t noticing/very aware.

    During this, she didn’t rub or wipe her right hand.

    Around 10mins afterwards, when she got off the bus, she tried to open the bottle cap of her mineral water with her right hand, and because her hand was dry and peeling, it caused small friction wounds. They were red and bleeding, but they were superficial wounds (obvly not deep cuts).

    She also touched her lips and her other hand, and rubbed her eyes and face a few times after getting off the bus, first time ard 10mins after initial exposure, and quite a few times afterwards, up to two hours after. She does not think that she did these while on the bus. During this whole time, she didn’t rub or clean her hands.

    Any risk? I think she’s concerned mainly because of the fresh wounds created directly on possibly dirty skin after the exposure, and the contact with her eyes and lips that first happened shortly (10mins) after the exposure, and then for another few more times over an extended duration.

    Thanks for reading this. Hope to hear from you soon.

  2. For this question, please assume that this now-wet blood was able to enter the bloodstream or through a mucous membrane (e.g. splashed into eye) successfully and immediately. Meaning that if it was actually fresh HIV blood, the person may likely have been infected.

    Basically, I am interested in knowing about the inherent HIV risk (within the blood) from dried blood that got wet again (like whether HIV regains virulence when the dried blood becomes wet, such that the blood itself poses a risk again).

    Rly sorry for the add-on comment, but please do take this into account in your ans. I just want to make clear what I am asking. Thank you very much.

    • Julian Ng

      Hi, Lily

      Generally, dried blood has negligible risk of HIV virus surviving even when subsequently it becomes wet again.

  3. hi sir.. risk 21 Nov 17 ..
    1. first test CMIA 30 nov 17 no reative
    2. test 14 dec 17 – CMIA ag/ab no reative
    3. test 22 Dec 17 – CMIA ag/ab no reative
    4. test 03 Jan 18 – CMIA ag/ab no reative
    5. test 14 jan 18 – CMIA ag/ab no reative
    6. test 22 jan test CMIA 60 day no – reative
    test acuryte or not .or not conclusive or more test 90 day
    CMIA window priod 6 week i read your blog dr tan
    but my skin itches .. i test at BP LAB malaysia .. help me doctor..

  4. hi sir i really need ur help and advice. i am planning to come to do a 4th gen rapid test soon. but i am afraid. i was exposed to low concentrations like maybe only abit of sperm . my question is , will the amount of sperm i was exposed to affect my window period. they say 4 weeks for 4th gen test and 3 months for 3rd gen, but if u were exposed to only abit shouldnt the body take a longer period to fight and cause infection. ? like maybe duee to low concentrations so more than 3 months?

    • No, that is not how HIV infection or testing works. After the window period, the respective tests are deemed conclusive.

  5. I had protected sex with a sex worker 8 weeks ago and now my skin itches/tingles a lot of the time. I can’t see a rash but the skin still feels itchy. WHat has happened to cause this?

  6. I had protected sex with a female chinese prostitute (call girl via telephone agency service) on 24th November 2017 and I do not think the condom broke. About 6 weeks later I got a dry top lip which looked like a line of dark red skin along my top lip and it went away after a few days with lip balm to keep it moist. Then I got itchy eyes and a GP thought over the internet it was allergic conjunctivitis. I feel it itch sometimes during the day or evening. But now I have been having some itchy skin over my body at 7 weeks and tomorrow it will be 9 weeks. There is no rash but it feels a bit itchy. NOW listen….my fiancee who is in Taiwan (and I made her do a rapid test about 4 or 5 months ago and it was negative) she said she is ill this morning. She said she has a very itchy throat and felt a bit dizzy. I asked her if she had a fever and she said no, she doesnt think so but she hadnt taken her temperature she said. Dr, I am worried. I am worried maybe a prostitute gave me a condom which was not safe or something and maybe she had HIV. Maybe she is trying to infect people on purpose. WHy do my eyes itch sometimes and my skin itches and my fiancee has bad itchy throat (4 weeks after we had unprotected sex….but only one time and I know she is negative that is why and I did not suspect anything wrong at the end of December 2017 when we had unprotected sex one time.) I am worried for her as well as me. I have not had a fever in 9 weeks and no swollen glands. Just itchy eyes and skin but no pimples that I can see. can you comment please? I am scared to get a test done.

    • Your symptoms do not sound particularly worrisome for acute HIV. I think you may just be feeling anxious. In any case, I cannot make or exclude a diagnosis of HIV or other STDs with symptoms alone. You should visit us for a proper consult and testing.

  7. Worryger

    Dear Dr,
    I having an issue where i had a unprotected sex. And the next 2-3 days i start to feel abit pain when visiting to the toilet. I went to the first doc he think im.having UTI and prescribe me with antibiotics. But it doesnt help. I went to another doc he examined and mention is herpes.. As there are 2-3 ulcers around.
    Please advise what should i do.

  8. Hi doctor,
    I have a question.

    If someone had unprotected vaginal sex with girl let’s say she is HIV+ and she don’t take medicine.
    Is that mean the guy will get the virus 100% ? Or there is percentage for getting virus for this sex. Thanks

    • No, it is not 100%. Assuming she had acute HIV infection and other concurrent STDs such as herpes, chlamydia or gonorrhea, your risk may be up to 1 in 50 exposures.

  9. Dear Dr...

    Dear Dr.

    Would you say negative RNA PCR test at 20.5 days is essentially conclusive?
    I am still considering to take duo at 6 or 8 weeks. What are your thoughts?

    • Yes, it is essentially conclusive. You may still proceed with the antigen/antibody test later if you are still concerned.

      • Dear Dr...

        Thank you.

        I have one more queries.
        Do you know any cases where it became positive later on?
        It looks like one should have detectable load at 3 weeks, but I was wondering if you knew other cases…

  10. I had receptive anal sex ytd. When the guy pull out his condom, it slip and was stuck inside me. I immediately pull it out and was afraid I’m already in contact with his semen. What should I do now?

    • Please visit our Robertson Walk clinic for a proper assessment and consideration for post-exposure prophylaxis (PEP), which is effective at reducing HIV risk if started within 72 hours of exposure.

  11. Hi Dr, if there is fresh blood on e.g. a strand of hair and it pokes into the eye, any risk?

    And if the fresh blood is left behind instead on the eyelashes and shortly after, while applying cleanser to the eyelid, not the eyelashes and then washing the face, but opening the eye too fast so the first wave of water carries the germs and blood on the eyelashes into the eye, any risk? Does the answer remain unchanged?

    Thanks, doc.

  12. Hi doctor, sry for bothering you but really hope you can help me with this.

    I went to a public restroom. A woman was washing blood off her injuries very aggressively, and it splashed onto my leg. It was quite a bit of blood on her, becuz it looked like she peeled off her scab. I don’t know if she just entered the toilet or had been washing for some time.

    I tried to clean the fluid on the leg with soap and water, but it just caused the water+blood to run down all over my leg and soak into my sock. Do not think my leg had any fresh wounds, but not entirely sure, becuz I have a tendency to scratch my legs.

    I took an hour to go back to home to shower, during which my foot was in constant contact with that sock. As my shoe was new, it was constantly rubbing against my skin and might have caused injury.

    Any risk of HIV from any of these 3 scenarios?

    Really appreciate your answer. Thank you.

    • To add on, I noticed she wasn’t washing with any soap, only water. And the wound was definitely actively bleeding. Even after she washed finish.

      Really sorry for the second question on this forum. Really appreciate the work you are doing, Dr, and really hope you can help me with this. Thank you very very much

    • I do not believe there is any realistic risk from this scenario as your did not have any visibly soiled wounds.

  13. Hello doctor. Pardon the weird question.

    I was wearing pants without any underwear at home for half an hour, before I realized I did not have underwear on and took off the pants. That’s when I saw that there was a white 1cm stain and another white long 2cm viscous fluid on the inside of the pants, right where the female private parts would have been at. I’m not sure where along the private parts did the stain come in contact with.

    It is quite likely that the stain is semen, and this involves a very complicated story about an extremely irresponsible sister that I will spare you. I am more reserved about the 2cm viscous fluid because I know it may be a vaginal secretion. However, because the situation with this sister makes this possible and to satisfy all areas of doubt in my heart with this qn, please assume that both the 1cm stain and the 2cm fluid are semen.

    I know that if the semen is dried, it will be a very negligible risk.

    My question is, if the semen was fresh and came into contact with my private areas for half an hour (including the mucous membranes and taking into account any possible injuries), is there any risk for HIV exposure this way?

    Really sorry for the weird question. I will be extremely grateful for your answer.

  14. Hi Dr,

    My friend’s finger got cut and is bleeding. I use my hand with tissue paper to help her stop the bleeding for like 5 minutes. Unknown hiv status for this friend. I might touch her blood through the thin tissue paper. I don’t have any obvious wound on my hands (maybe just a small scratch). Is there any risk for HIV? Do I need to get hiv test? Thanks

  15. Hello doctor I went to a pharmacy to buy a shampoo.The pharmacy skin advisor suggested me analyze my scalp with a device that i don’t know what it was.She put it on my scalp.After that she cut five of my hair strands off their roots with a tweezers.my question is:if there was blood on the device or tweezers,am i at risk for hiv given that my scalp was inflamed that day (but i’m not sure it was bleeding or not)?
    Thanks a lot

  16. Hello doctor, quick question.

    I unknowingly used toilet paper with a small bright red dot/spot to wipe my bottom after urinating. I was wiping from the front, so the toilet paper came in contact and brushed against my female private parts (including vagina), along with my pee hole and in between the butt cheeks.

    If that spot was blood, is there any risk?

    Many thanks.

  17. hello doctor .. my risk 21 nov 2017.. test CMIA Ag/Ab
    53 day negative .. conclusive or not .. help me doctor

  18. I’m a 35 year old male. On December 05 i had an unprotected sex Ever since i’ve been paranoid about HIV. I’ve had several HIV COMBI PT tests done:
    21 days after exposure the result was NON REACTIVE with a 0.30 index. 28 days after exposure results came NON REACTIVE again, with a 0.30 index. 42 days after exposure again NON REACTIVE with a 0.28 index. I could really use your help and some advise.
    1.Do I need further testing or this is considered conclusive?
    2.Hiv Combi PT this is a test 4 generations
    Thank you.

  19. PCR@10.5 days

    Dear Sir

    I am a male who was exposed to a low risk situation with brief unprotected oral with a woman (both giving and receiving). While it is considered low risk, I was worried that I had a sore throat due to cold…which may had some inflammation. There may have been minimal contact of the genitals, but only at the surface (no penetration what so ever) By the way, I dont have Chlamydia nor gonorreia. I need to wait for the Syphilis test, but I have never had that in the past.

    I had done a Taqman RNA PCR test at day 10.5 days and came back negative. How reliable are the results at 10.5 days? I see numbers as low as <7 days and up to 18 days or so. It seems like the most common cutoff is 9 – 14 days or so. While each case maybe unique to its own, have you seen a case where a negative results at 10 days become positive afterwards? If the assay providers and doctors offer a test at around 10 days, I should feel comfortable with it. However, 10.5 days being so close to the eclipse period makes me worried. (maybe some ppl take longer time for viral load to be detectable?)

    Currently i am at 20 days, no fever…but still worried…which naturally gives you nausea and other discomfort (slight slight fever?, around back teeth area)…which naturally makes you worried.

    I am thinking about re-taking the NAT test tomorrow and follow with Duo at 6 weeks.

    Thank you for your time in advance.

    • The PCR test is very sensitive at 10.5 days. And the fact is that your exposure risk is negligible – therefore, the negative predictive value of the test is close to 100%. I would not worry if I were you.

      • PCR@10.5 days

        Thank you for the quick response.
        Perhaps the discomfort I am feeling is stress related…

  20. I took 4th gen today which is on the 28th day. My last exposure was on 21 dec last yr around 1330hrs++. I took the test today at around 12++hrs and the result is negative. Is it conclusive?

  21. Hi ،

    I am really afraid that i contracted HIV From my las expousre 6 months ago which was only protected blowjob with csw which informed me she is clean and asked me if i want ejaculation i have to use condoms , so the action took like 16 minuts or so and ejaculation on her breasts then i fingered her vagina with my finger which i remembered it was having a pin cut like 1mm in early morning but stopped bleeding after 2 minutes and when i remembered i stopped and no ejaculation at all ,

    I did HIV P24 Ag Abs COMBO test after 5 months and 20 days from the expousre date and result came back Non-Reactive ,

    I am having lympho nodes swelling in my upper part of my neck but no fever or flu ir rash as far i remember since 3 years back ,

    But now my lady today started to gave one lympho on upper right part of her neck ,

    I am using condoms with my lady but i am afraid i did something wrong to her , what you think plz as i have self immune system illness and i am thinking it might affect the abs or ag spread in my blood ?

    I did also yesterday cbc and its normal , i need your help or shall i re-test again mow ??

    • Sorr i missed to say that there was no intercourse with her at all , just what i have mentioned above,

    • Your exposure risk for HIV is zero. And your tests conclusive – no HIV. You are just being overly anxious.

      • You are correct Doc i might be overly anxious but i really have seen alot of comments and some of it advise only after a year or more to discover the virus?

        Is the HSA RECALL only affected the Ag components and if it is more than 100 days its still as of 99.9 % ??

        Have you ever heard about a new cure in spain ??

  22. Dear Dr,

    Is dry, chapped skin with perhaps even some red irritation but no visible cuts constitute as intact skin or no (because of possibility of micro-cuts)? If HIV+ blood gets onto such skin, is there risk?


  23. Hi Doc,

    Sorry if this qn is dumb but I would be grateful for an answer.

    Ytd on the train, the back of my forearm touched another woman’s, and when I looked over, I saw that her forearm had a few red injuries (cuts and scratches I think) and one sore, all of which seemed to be at least partially healed, although I could only take one glance so I cannot be sure.

    I didn’t have anything to wipe my forearm, and couldn’t wash it on the train. During that time, my hair brushed past and sometimes stuck to that area for a bit.

    I think that area of my forearm didn’t have any injuries but my hair was lifted up to my lips a few times by wind or momentum, sometimes when my mouth was open.

    My hair also stuck to my back, especially after showering, because I didn’t think to wash my hair, and my back is prone to hard scratching by me, which I did shortly after the shower.

    Is there any risk in this exposure? And would the answer be the same if my forearm had injuries too?

    Thank you very much for your time and patience, Dr.

  24. Doctor Jonathan,

    With a hotel house keeping Maid she came to clean my room in Ethiopia and she tried to offer me sex but i refused but she graped my penis and at this time i agreed for some gand touches only , Am i at risk without intercourse at all just touching her vagina and she massages my dick and then she went down on her knees and put my dick in between her breasts not using oil but it was soft enough and with my pre-cum she did it till ejaculation ,

    That case was 7 months ago but i tested after 4 months and half ago and the test was P24 Ag Abs Combo and the result was Non-Reactive after 3 hours ,

    I am having 2 lympho like 2mm small beside my left jaw and its been there since 7 months .

    Also white layer on the end part of my tounge which i can remove it with my brushing only at my end part of tounge ,

    Please tell me what you think?

    • Zero risk for HIV. And your tests are conclusive.

      • Thank you , you don’t recommend a retest again now ?

        Should i retest with 3rd Generation as i heard the 4th Generation not accurate after 8 weeks ?

        • No, I do not believe any re-test is necessary. And 4th gen tests are accurate from 4 weeks onwards. There is no drop in accuracy with time.

  25. Hi doctor.
    Few months ago, I was a bit drunk and had a handjob by csw, and my dick was lick and sucked only for less than half a minute. 5 mins later, I went to the washroom and washed my penis with tap water.
    1. I read some of the doctors comment and found out that oral sex is very much debated. I just want to know if you have any patient who came to you in this scenario and turns out to be hiv positive.
    2. May i know if washing my penis increases the risk?

    • No, the risk from oral sex is not debated. It is negligible. I do not know of any patient who contracted HIV through oral sex.

  26. I had unprotected oral sex at a massage parlor with some anal rimming. I have haemorrhoids too thus made apprehensive about this unprotected act. also i am not aware if the masseuse had blood in her mouth. I developed some ARS symptoms like sore throat and running nose after two weeks, then some headache and fatigue the next week. I have been in anxiety of having HIV ever since. Thus i got myself tested with CMIA DUO test with non reactive result (0.38) after 31 days of this exposure. is this result conclusive or i have to test again.

  27. Hello doctor, would really appreciate your reply to this:

    I cut my finger today on the hanger hook in the public restroom while trying to hook my bag on it. The cut was around 5mm long.

    I didn’t wipe or clean the cut. I just used the toilet. Only after I used the toilet, when I was taking down my bag and accidentally clicked on my phone flashlight, did I notice that there was a red stain on the hook, right where my cut would have come in contact with. It definitely didn’t come from me, because its size was too big to come from such a fresh cut.

    I left the toilet and then cleaned my finger with soap, as well as soak up the blood from my cut with tissue. However, that was around 10-15mins after the cut was alr made.

    The stain was as bright red as fresh blood. I don’t know when the toilet was last used (I wasn’t noticing the people leaving the toilets) and I don’t know if it was liquid or dried (although it seemed quite liquid).

    If this came from a HIV-positive person, should I be concerned? Given how extremely extremely fresh my cut was?

    • I don’t know how relevant this is, but the cut was on my thumb, on the very smooth area between the base of the nail and the outermost/first thumb joint.

      Thank you very much, doc.

    • I do not believe you are at any risk from this exposure.

  28. Harry Tom's


    I am freaking out in philipine after a massage low risky case As per what i have seen from your previous comments here (Handjob) and she was licking my balls & i Never had insertive sex with that csw lady that night on 5th Nov 2016 and i have been advised to calm myself to do the test ,
    On 19th of April 2017 i did HIV P24 Ag Abs Combo test and i had to wait 3 hours till i recieved the result of (Non-Reactive) but i am having small lympho nodes under my lower jaw since a year and thin lines on several nails .
    What you think of my test which almost close to 24 weeks ??

    Help me plz ,

  29. confused

    Dear doctor, I got a handjob and unprotected oral sex from csw. I seen my family physican and he said to come to a hiv clinic and also told me that it is not necessary to test. I am very confused and dumbfounded by his opinion. Is oral sex really such a low risk? And I would also like to know which clinic does dr tan goes to? thanks

    • The risk of HIV from oral sex is close to zero; however, there are other STDs such as chlamydia and gonorrhea which you can certainly contract from oral sex. Dr Tan is generally based in Novena, but you would have to call and make an appointment. Otherwise, if you wish to walk-in for anonymous HIV testing or further consultation, you may come down to our Robertson Walk clinic – this is our only clinic which is mandated to perform rapid HIV testing anonymously.

  30. Patrick Jh

    Hello doctor,
    Last week , i had blow job with a girl let’s say she’s HIV+ .
    Blow job considered as low or high risk of HIV ? Or zero risk ?

  31. Hi Doctor.

    Can blood stained hand towel transmit HIV? I have one small cuts on my back on my hand.

    Am I risk in getting it ?


    • I noticed that blood stained after i clean my hand after that ..because the color of the towel is quite dark ~

    • I would consider the risk essentially zero.

  32. Raminof


    Hope you are doing well , what are the cases for a delay sperad of the Ag or Abs in the blood , it really bother me to get to read that it might take up to more than 6 months for some cases to catch the virus in the blood by testing ?

    case: was only a massage handjob and she licked my balls for two minutes while she was strocking my penis and i ejaculated on her boobs thats it , i tested after 23 weeks & 13 months HIV P24 ag abs Combo and result non Reactive IN BOTH TESTS but never got fever or flu or rash at all ,

    What you think and is it very risky ?

  33. Mattt97

    Hello Doctor,
    This may be a stupid question to ask, but does frequent masturbation cause HIV or STD?
    About half a year ago, I used to masturbate 2-3 times a week in the toilet, I didn’t have any problem until recently I started to fall sick quite easily and there are little red spots(filled with pus, like pimple) on the back, front(stomach area), shoulder, neck, and occasionally trunk and leg area. I went to a GP and he told me I was bitten by some bugs from a dirty clothing/mattress etc and it cannot be seen with a naked eye. I was not really convince by him.
    I have since cut down my masturbation to 0 to 1 times a week, and the red spots do come back once in a while
    My girlfriend asked me to get myself tested, but I would like to hear from you first. Thanks!

    • No, you cannot get STDs or HIV from masturbation alone. They are sexually transmitted (as the name suggests).

  34. curious

    i am looking for an opinion
    day0- receive unprotected oral sex(not sure oresence of blood)
    day15- low grade fever(37·4)
    hoarse throat(no voice)
    erythematous, generally symmetrical, non puritus(only for a while when it starts) maculopapular rash(more like pimple break out), swollen lymph nodes
    day 20- hiv home test kit(erd generation)

    1) my concern is that do i need to retest?
    2) should i have taken pep during the first three days? i am very regretting now
    3) are my symptoms suggestive of hiv?

    • Your risk of HIV from oral sex is close to zero so I do not recommend PEP for oral sex. Your symptoms are non-specific but so are HIV symptoms – we do not go by symptoms, just exposure risk and testing. If it was a risky exposure, your test is not yet conclusive and you would need a 4th gen test at 28 days or more.

  35. Rayan Chan

    I recently did Alere HIV combo duo test and doctor told me that result be ready in 10 mins. He concluded result at 15-16 min later as Negative. The official word is 20 min wait time. Why this discrepancy?
    Is it conclusive at 10 min?
    Lastly, I am not sure, where did he get the lancet before pricking me. I am worried if he applied a used lancet on me?
    DO y guys use single use lancet? that means it cant be used second time even if someone tries to use it by mistake?

    Please reply.

    • 10 minutes is usually adequate time to identify the result accurately. Lancets are single-use in our clinic, and presumably any other testing facility.

      • Rayan chan

        Can it become positive closer to 20 min? If interpretated and discarded at 10 min?

        • Not in my experience.

          • Rayan Chan

            So doctor, mine was interpreted at 15-16 min, do y think that by this time result would be 100 per accurate?
            My suggestion is that there should be standardization wity rgards to wait time. i.e., either 20 min or 10 min, without any confusion.

          • Rayan chan

            Can we rely on pkint of care rapid hiv kids? Hows the comparison with elisa based ag/ab test.
            If rapid tests are less accurate then can we say that Elisa based test is the way to go?

          • Rayan chan

            Dear dr.
            Please reply to my Qs above.

  36. Stephen

    Hi Dr .

    I have fatigue and weakness all my body from six months . Also redness of my skin and muscle joints .
    I did HIV test two times :

    #First, after 90 days of exposure. Rapid test negative

    #Second , after 150 days
    ( 5 months ) of exposure. Rapid test also negative
    Is that conclusive for HIV?

    Because my pains in back and shoulders and legs still .

    Do u think this is urid acid problem? Or i should test HIV again next month
    ( to be six months window period )
    Help pls . Thanks

  37. Hi drs
    I had protected sex with a prostitute in geylang x2 with bareback oral sex a week ago. When should I see you at the earliest for a conclusive HIV test? Many thanks.

    • For conclusive HIV testing, you should come at 28 days or more post-exposure. We can also discuss other potential STDs and testing/treatment.

  38. Hi Doctor, I stupidly had unprotected oral sex and protected vaginal sex with a freelance prostitute online from PRC. Condom stayed on throughout sex.
    What would be the chances of contracting HIV from this episode?

    • The chances are fairly low for HIV, but there are certainly risks of other STDs such as chlamydia, gonorrhea, herpes, etc. Please visit us for a proper consult and evaluation.

  39. Hello,I had a biopsy of my wart a few months ago in a lab with a blade which was accompanied by lots of bleeding.From that day on,I’m always wondering if the blade has been clean or not because the lab space wasn´t so clean.since I suffer from obsessive-compulsive disorder, 31 days after my biopsy i did rna analysis test for hiv and hcv that both came to negative.3 days after my test i got a fever and had pain in my abdominal region along with nausea.I Felt well 5 days later.I also did anti hiv1,2- p24 ag-anti hcv and hiv pcr test forty days after my biopsy that their results were non-reactive and negative.My questions are: 1) Are my test results reliable? 2)Do i need to test more? I would appreciate it if you answer my questions.I’m so anxious because i live in a third world country and if a medical malpractice happens,no one will be responsible for it. many thanks

  40. Hi Dr,

    I did a blowjob on my bf on tues (26th dec), and he cum in my mouth, i swallowed it. We had no sex after that. And what i realised now is that he had several other girls outside, and im not sure if he had sex with any of them. What are the risks im getting? Am getting light headed and sleepy after that. Am i infected?

    • The risk of HIV is essentially zero. However, there are other potential STDs which you can pick up from giving oral sex, including chlamydia, gonorrhea, herpes. If you have concerns, please visit us for a proper consult and assessment.

  41. I am very much confused about Herpes HSV 1 (Gential) or Balanitis or Candida? I had unprotected sex 3 month before. I did HIV test in first and second month after exposure and came out negative.
    After second month, I found small red rashes on head of my penis. Doctor did the swap test and told me its balanitis. I applied cream for 2 weeks no result. Also I found white layers inside my cheek. In third month, I did all STD test like HIV, Hep-B & C, Chlamydia, and Herpes. During that time I was very stress from 2 month and hectic & stressful work,and saw some skin rashes on penis (kind of ulcers). In test report all other tests are negative and HSV – 1 came out positive (IGg test on 3 months exposure).
    Doctor told me to take valtrex and gave me some cream to apply. I have joint pain from 2 month and blisters on my back. I never had cold sores, swap test result showed balanitis and blood test showed HSV -1. My Penis skin peeling and ulcer almost healed now.

    I am confused, taking swap test or blood test or western blot test for herpes conclude something. Also, is it yeast or candida because of white layer inside my cheek and sore throat (feel likes something struck in throat)?

    Kindly advise, is there any test to find out the problem. Also is HIV tests are conclusive?

  42. Dear Doctor, i went to a massage and was given a oiled handjob without protection. I am having the following worries regarding the possibility of getting STIs, HPVs, HIV.

    1) i can’t see if there are any open wound, sore, cuts, warts or her genital fluids on the hands/fingers of the masseuse. Assuming there are and what is my risk of getting the above (STDs, HIV, HPVs) from the handjob I received?

    2) it was dark then and i can’t tell if she had used her mouth on my penis (i am in the insertive position) while doing the handjob. (i hope she didn’t as i said hands only) If she did, it was only briefly as i remember i ejaculated on her hands. Assuming she did, what will my risk be on STDs, HPV and HIV?

    3) I have rubbed her clitoris and outer area with my fingers for 15-20 seconds with no insertion. After maybe 3-5mins she moved her fingers around my anus opening area after massaging/touching my hands/fingers that i rubbed her with earlier. After these I touched my penis with the same hand/fingers while cleaning up with a wet wipe.

    She had also used her mouth on my nipples. Again, what is my risk of transferring any of the above (STDs, HIV, HPVs) from my fingers to penis? And also, from her fingers to my anus opening? I am worried more on HIV (understand Low risk) and HPV (skin to skin contact).

    Your assistance/advice is deeply appreciated and I am really very worried. Thank you.

  43. Doctor plz help me

    I had hiv 4th gen ab/AG …CMIA method at 22 and 29 day …
    DNA detector at 4th day …
    All are negative …but I got symtoms and flat red dots on hands and upper chest in different regions ….
    Plz help me doctor ….
    My comment is being deleted automatically …

    • I have answered your question already. Your 4th gen test at 29 days is conclusive.

      • Doctor plz help me

        That means I don’t have HIV and can I mover further in my life …..and any further testing needed doctor ?

      • Doctor plz help me

        I’m sorry doctor ..I’m from India ….on test page its return that it detesct 97 ./. Infections by 3 month ….I MEAN IN INTERPRETATIONS
        But it is most reputable lab…and method is ECLIA …….

        • Doctor plz help me

          4th gen AG / ab
          Electrochemiluminescene …
          Plz answer this doctor I will not repeat any question again ….plz doctor …plz

  44. Dear Dr ,

    A girl did blow job for me ( suck penis) only for like 6 seconds . It’s unknown status
    This considered with low or high risk of HIV? Or zero risk? Because it’s only six seconds . Thanks

  45. Skinny ada

    Dear Doctor Tan ,

    I am freaking out as i had low risky as per what my Doctor in my country said ( oil Handjob and between her breasts with oil ) & told me as long as i Never had insertive sex with that csw lady that night on 2nd Nov 2016 then the rest actions are low risky and he advised me just to free mind myself to do the test ,

    On 18th of April 2017 i did HIV P24 Ag Abs Combo test and i had to wait 2 hours till i recieved the result as of Non-Reactive but i am having small lympho nodes under my lower jaw since one year ago and not increasing or decreasing its like ( 0.5 cm ) and thin line on one nail .

    What you think of my test which almost close to 24 weeks ??

    • You have posted the same comment multiple times. The answer is the same. ZERO RISK. NEGATIVE RESULT CONCLUSIVE.

  46. Hi Dr,

    I had a protected blowjob and handjob during taiwan trip on 8/11/2017. I quite worry then i will get HIV right now, am i in any risk of HIV?

    • There is negligible risk of HIV through oral sex. If you are concerned, please come down to our Robertson Walk clinic for consult and anonymous testing.

  47. Hi doctor ,
    Last week i feel fatigue and weakness in all my body and redness of my body.
    I did Full blood test my platelets was low
    80 ( 150—400 ) was very scared
    Next i did HIV test ( 4 months) after exposure negative result.

    In your opinion, platelets become low because many reasons, one of them HIV but it’s negative, so maybe i have cancer?
    What diseases or viruses make platelets low?
    What tests i should do to know my problem? Thanks

  48. Tomvietnam

    Hello doctor. I had a negative result after a 38 day exposure test, and I needed to do more tests in 3 months.

  49. Hello doctor

    Sorry if this is a silly question, would really appreciate your answer.

    I was a bit drunk yesterday night, and while taking the escalator, one of my fingers was resting on some wet fluid on the handrail. Didn’t remove my finger or bother wiping it ’cause I wasn’t thinking straight then.

    When I lifted my hand, it touched my teeth ’cause my mouth was open.

    I instinctively closed shut my mouth after that, so the inner mucous membrane of my lips was in long contact with my teeth.

    Do I need to be worried of getting HIV if the fluid was blood or some other possible vector? Scared that the person who left the fluid left it very very shortly before I rested my finger on it, so no more exposure to air after I put my finger on it.

    Would really appreciate your time to reply this. Thank you.

  50. ******I AM EXPECTING YOUR KIND OPINION.******* I had short time unprotected anal sex WITH unknown male in 7 jULY 2016, no symptom apart from some unwell feelings in hand and legs. From 14th MAY 2017 i felt unwell and felt some symptoms joint and muscle pain discretely in hands and legs, nausea for 2/3 days, two times soft stool(not diarrhea), over sleepy over a period of time for almost 2 weeks and before that also, chest palpitation, pressure inside head, very mild fever for short time 2-3 days, bad feelings like weakness and palpitation, discrete mild pain was in whole month of MAY, short time night flash also at the neck. All were very mild, i have history of panic disorder for long time where i had to go under treatment for long 5 years. I tested rapid antibody test in July 5th 2017 and got ‘NEGATIVE’ though i cannot remember that the lab technician used the CHASE BUFFER or not, i asked he said that he is an expert on it and he does 4-5 test each day for last five years. Problem is i found some scary symptom in my girlfriend also during the same time and all came almost after one year of my exposure, she was falling asleep in office,hugely tired, feeling nausea for two days, and headache and fever for another two days and abdominal pain during period. We had sex last time 4 months before and later we broke up. Then at around 14-18 july, 2017 i had vaginal sex with a new girl who i am going to marry but i found some scary symptom in this new girl also during the 28th July ,2017 onward. she was falling asleep in office, just after 12 days she felt huge headache and bad feeling in her body, was hugely tired , had palpitation, she had nausea for whole night and day on 31st of JULY and felt very unwell in her body, had a pressure up 130/100, she still don’t have the period this month. Her and my symptoms are almost similar and she got the symptom just within 2 weeks after having sex with me. Now i am seeing some dry skin in my arms and my legs also and still having the mild joint and muscle pain discretely specially in my hand. “”do u think that my rapid antibody test was false on 5th July 2017 after one year of exposure?”” What if that person did not add the chase buffer and had got a false negative”. I tested from an NGO who only works with HIV.

    I did another test on the month of NOVEMBER 2017 with blood serum and the test happened in front of my own eyes. It came back NEGATIVE again. I watched the lab technician centrifuged the blood and took the serum to another small test tube and then put that on the test bed and i watched it for 15 min and saw it NEGATIVE. But still i am worried because I am engaged with another girl and it is annoying for me to see same type of symptoms with my this GF also. Why even after being negative two times all my GFs are felling same? I am confused. Can there be any other explanation like HAV/HBV/HCV? what can go wrong? after 2-4 weeks of sec period-they felt short time nausea, sleepy and over tiredness and general unwell feeling for them.

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