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!

HIV RNA / DNA PCR Test – Nucleic Acid Amplification Testing (NAAT)


a.k.a Nucleic Acid Amplification Testing (NAAT)

The HIV RNA test has revolutionized HIV screening especially for people at high risk.

The test directly measures the amount of HIV virus in a person’s blood.

This same test is also used to monitor how a person with HIV is responding to treatment. When used this way, it is called a Viral Load test.

The HIV RNA test is deemed to be 100% conclusive if done after 10 to 12 days from the date of exposure.

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










There are some theories that say this test becomes less accurate from about 3 months post exposure. This is because at 3 months post exposure, the body would have made antibodies to fight the HIV virus. Therefore, the amount of virus in the blood may drop below the detection limit of the RNA test.

Acute HIV infection is very challenging to identify because its symptoms are not specific and antibody tests often are either still negative or indeterminate. However, this is also the time when an infected person is most contagious due to a high viral load. Detection of acute HIV infection not only enables us to counsel the patient on taking active steps to reduce transmission, it also enables us to better identify potentially infected partners as the time span we need to focus on is still relatively short.

Currently the vast majority of HIV tests are conducted using antibody tests. These include rapid tests such as Oraquick™ (Rockeby) and Determine™ (Abbott) and also conventional blood ELISA tests.

The limitation of antibody tests is the window period. Antibody tests may not be able to pick up HIV infections for up to 3 months after an individual is infected. This is far from ideal because this is exactly the period that a person is most infectious with the highest viral load. Acute HIV infection contributes disproportionately to HIV transmission due to its high viral load and negative antibody tests.

NAAT tests for HIV require only 10 days post exposure to be accurate. It is the only option for detecting HIV infection before seroconversion.

Click here for HIV Testing FAQ

Benefits of NAAT include:

  1. Earlier identification of infected persons leading to reduced transmission risks
  2. Facilitate partner identification, counseling and testing
  3. Early diagnosis leads to early initiation of follow up and treatment leading to better prognosis

However, NAAT increases the cost and turnover time for HIV testing.

A screening program for Acute HIV Infection using pooled NAAT was successfully conducted by the New York City Department of Health and Mental Hygiene1. Specimens from all patients whose rapid HIV antibody test was negative were tested by polymerase chain reaction in pools of 512 specimens. If the pool was positive, component specimens were tested to identify which specimen(s) contained HIV RNA. The report findings confirmed that pooled NAAT can increase Acute HIV Infection diagnoses among high risk STD patients. It can also be used to identify areas or populations in which HIV infection is spreading.

At our clinic the HIV RNA Test costs $600 excluding consultation charges and GST.

Our usual consultation charge is $35 making the total bill $679 ($600 + $35 + 7% GST).

The usual turnaround time is 2 weeks.

However, the Lab can conduct an expedited test for a surcharge of $100 ($107 with GST).

If you wish to have a HIV RNA test done, please come down to our clinic.

There is no preparation like fasting necessary.

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

All Our Doctors are Fully Certified and Trained to conduct specialised STD and HIV Testing.


Need more advice?

Come down to Our Clinics for a discussion with Our Doctors, or call our clinics for more information:

1.) Robertson Walk (+65 6238 7810)

2.) Bencoolen Street (+65 6884 4119)

3.) Novena Medical Centre (+65 6397 2095)

4.) Scotts Medical Centre (+65 6694 2348)

5.) Somerset – Orchard Building (+65 6262 0762)

6.) Katong – East Coast Road (+65 6635 2551)

Where to find us – here

Click Here for Contact Details, Address and Opening Times.

Selected clinics are open on Saturday and Sunday.

Doctor’s Schedule here

Email: [email protected]

All prices quoted below excludes prevailing GST

Our Andrology and Infection Centre at Novena Medical Center is open.Call us at 63972095 now to book your appointment.Feel free to email your queries, feedback and suggestions on what other topics you want to see in the comments section below.If you have any questions, visit our free online forum on sexual health, HIV and STDs.1. CDC. MMWR, November 27, 2009/58(46);1296-1299

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 $20.00-80.00
Rapid test only $20.00
(not inclusive of test)
8am – 5pm $60.00
5pm – 9pm $80.00
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 $ 190.00
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. protected sex with csw.condom not removed weared underwear and after condom removed weared same underwear..vaginal fluids in underwear.
    tests 11th hiv 1 pcr rna..30,45,63,90 hiv combi …4,9,12,15,22 months antibody test all negative
    hsbag at 3 and 12 months negative
    hcv at 3 and 22 months negative
    vdrl at 1,3,4,12,22 months negative
    is my tests conclusive do i need further testing…because am going to marry plzz rply me

  2. Hi Dr i had a protected sex with HIV positive female i know later about her status…Mainly vaginal….fingering for seconds…whats my chance to get hiv….btw in the same day i shaved and i have very small tiny cut at the hair area…i will make a test at 28 day? plz help

    • If it is unprotected, your risks are approximately between 1:260 – 1:2500 exposures. Using a condom properly should reduce this risk up to 95%. So overall I would say your risk is pretty low. You may come visit us for testing at the appropriate time.

  3. Hai doctor I sex with sex worker using three condom at the time I don’t no status of condom after 4 weak I got leg and shoulder pain and body weight loss also I tested 28 duo negative and 39 duo negative and 65 days antibody test negative and 83 days antibody test negative any further and hepitates c also negative any further test is required plz suggest me can I move my normal life

  4. Hi dr. Had protected vag sex with csw. Had rna pcr @11 days as well as combo Elisa @ 26,47,&60 days. All came back negative. I was okay until the 10th week . Now, at 75 days I’m having headaches and normal than regular body temperature- like my body feels hot but the thermometer from the mouth never says more than 37.7 . I don’t feel feverish , I’m just out out of sorts. I also have some minor mouth cuts on my lip that are red as well as some abnormal nail fungus that just appeared. Do I need a retest at 3months or my results are conclusive? Can my body heat be related to stress? It’s been going on now for about two weeks. My body temp fluctuates throughout the day. So most of the day it will be 36.5-36.8 and then at random points it will climb up to 37.2-37.7 (oral temp). Thanks in advance for your help.

  5. Hello Dr. You can’t reply my next question I see another skin doctor she say they are papules and she say she is not able to say anything definitely these papules due to medicine or any other reason but she give me medicine and say these papules are not related to hiv but you take definitely test at 24 week. I am really worried. I want to know only that thing if these papules happened by hiv seroconversion and I take duo test tomorrow my test is able to pic antibodies and if come negative we assume that these papules are not related to hiv.
    Please reply tomorrow I complete 21 week.
    Please please reply

  6. Doctor plz help me I discuss with my doctor today I have leg pain issue for one month last 20 days I taken immune treatment tablet for Aso titer issue that may affect my 65 hiv test result I have negative at 65 days time . Immune system get strong HIV virus may get weak my body cont produce any antibody plz doctor help me

  7. Hello doctor
    My English is not well. So please be understand and try to help me . Last 4 month ago a bad incident happened with me when I go toward my hostel after my job a unknown person (which are stay on road like that which are high risk of hiv) raped me. After that I can’t understand what can I do. After 3 day I tell my boyfriend everything and I go to doctor with my boyfriend and doctor prescribed me pep at around 90 hours after exposure. Doctor say pep may be work or not he cannot sure I take full pep course for 29 day at that time. After enquiry about unknown person he found hiv positive ( by his family members ) and his family members do not know about his hepatitis status. He is missing after this incident

    1. On pep 1 week after pep I feel reddish in my mouth like thrush which go away in4 day.
    2. I feel some red spot on my ribs which arise and go away after 1 week many times.
    1. I take over RNA for hiv 1at 6 week and 12 week after exposure.
    2. Hiv duo test 4,6,8,10,12,14,16, and 18 week after exposure all are negative index value in range between 0.07 to 0.14 always.
    3. Anti hcv 12 week and 18 week after exposure negative.
    4. Hbsag negative at 12 week and 18 week after exposure hepatitis b antibody positive( doctor say I am immunised) I have taken vaccine in child hood.
    5. Simple Herpes test at 9 week after exposure negative
    Our local guidelines suggested testing 1,3,6 month after exposure test conclusive.

    My doctor say my test conclusive I have no need of testing .
    But from last week I have more red spot occurred on my ribs and stomach.
    My infection doctor say it’s bite by insect . Then I go to skin specialist she say it’s like scabies I take medicine of scabies 4 day and old spot go away but today I have 2 new more red spot both side of rib seen which are large and different from previous.
    I don’t know anything about testing because I am not a doctor .even my doctors are not on same decision. Tomorrow I plan taking another test and visit to skin specialist also.
    Doctor I know you cannot diagnosis my on internet . But you may give any advice about testing and my window period .
    My doctor is right I do not have hiv . My main concerned toward hcv also please tell me about hiv and hcv also . Hcv test can be conclusive after 3 month or not.
    I have read CDC guidelines for pep also they say your test conclusive 3 month after exposure and 6 month test is required only when you are susceptible for hcv also. and BC CDC say your tests are conclusive after 3month pep but in this guidelines nothing say about hcv or may be I can’t understand properly
    Please answer if you don’t bothered. And I pray to God always my friend and me both are worried because we are plan marriage in November but after this incident we are not able to take any decision. Even we cannot say anything to our family. We are just waiting for result. Doctor please advise like that you give in your clinic or your patient . I am waiting for your reply
    Thanks from me

    • I believe your tests are conclusive for all HIV, Hep B and Hep C. You should try to move on with your life.

      • Dr. Today I go to skin doctor which say these red spots are papules.
        Q. I ask doctor these related to hiv .
        Answer. No

        Sir you can see any case which turn 3 month after post pep negative to positive.
        And papules are related to hiv I have need worry?
        I have need more testing.
        Sorry I again asking same question but I am really worried and try to move with life but these papules stop me and my doctor also not able to take decision last time she say scabies and these times say it’s papules .
        Sir please tell me one thing also papules and scabies treatment are same . Beacuse doctor say first complet ur scabies course than start papules treatment.
        Can u advice me about my doctor can i change my doctor and see another skin doctor or should continue with these doctor. Sorry i know you cannot judge online but i told you reality and just know your opinion about my doctor and her various opinion . I really want to move with life but i am worried about me and my life partner health.

        Thanks for ur reply
        Please reply I wait for your reply please tell briefly I know your are so busy.
        Sir you also give papules treatment and side effect s of pep after can you think that these are side effects of pep medicine my medicine are below
        1. Bottle whose name is tenofovir disoproxil fumarate and emtricitabine tablet 1per day and
        2nd bottle whose name is lopinavir and ritonavir (altera) 2 tablet morning and 2 evening.
        I am not in Singapore
        Thanks again for your valuable advice

  8. Hai doctor I had sex with sex worker with two condom but I don’t no status of condom but I tested hiv duo in 28 and 38 days both negative and after 65 days rapid test that also negative but still I have leg pain and hand pain now Iam taken some medicine also for leg pain can u suggest me its conclusive or not Can I go for std test any possible std desicess kidly suggest me which std I can test plz doctor

  9. depreseed

    Doctor please reply

  10. depreseed

    Hello doctor
    Please help and give some advice
    My duo test 3 month after pep and 4 month after exposure and get negative result. My hcv and Hbsag also negative . First i have 2-3 rashes they appear and disaapper but at that time I have may 6-7 in which 1is stable around 2 week . Please doctor help me . U and my doctor also say my test conclusive I have not hiv .can u suggest me about rash can pep long term side efects or this rash may be side effects of pep?
    Please. Please doctor reply it is last question from me I expect u answer my question my doctor is not able to answer my question please please I am feared because I taken pep at 94 hours it affect window period please help me doctor

  11. I am currently at 15 days post possible encounter. Would you recommend taking pcr rna test tomorrow at day 16? Or waiting to take the 4th gen duo at day 22 followed by another at day 31 or so? I am extremely nervous about the rna test as I have read about false positives that are common. Located in USA if that makes a difference.

    • I would advise to just complete your PEP and perform a 4th gen test post-PEP. There is no medical value of doing other tests beforehand.

      • I am not taking PEP though. Does that make a difference?

        • Sorry I misread. You can test if it will help your peace of mind; this does not change the window period.

          • I believe I am going to do the 4th gen duo at day 18 as their is a free clinic near me that will be offering them. Then I plan taking the same test again 2 weeks after at day 32.

            From my understanding and reading can you confirm the following:
            Test at day 18(if negative) should be good indicator of my status but not conclusive till day 28. So my test at day 32 if negative should be conclusive and not further testing needed?

            Thank you for the help. This will be my last question that I post.

  12. Hai doctor first I say to u sorry I disturbed u lot but your are the only one person to bring me to normal level plz reply me I have one doubt childhood Tb treatment can affect my window period I got the result 39 day duo negative but still wory please doctor help me don’t avoid this if you answer this i can start my life

  13. I had test in 40 days duo negative but in my child hood I taken Tb treatment if it’s affect my window period kindly suggest me I scard about that

  14. Hai sir I had sex with sex worker with condom I don’t no it’s tore or not but my 36 day duo test result came negative but I have seviour pain in my body I refer my doctor he said Aso positive it’s any chance to affect my hiv window period any other test is required

  15. depreseed

    Hello Dr.
    Thanks for u r help to all needy person
    1 my hiv duo test conclusive 12 week after pep.
    2. Anti hcv test conclusive after after 14 week exposure or I need for more test.
    My exposure is with hiv + transgender I am insertive I take pep at 94 hours .
    I have read ur comments I know my tests are conclusive if am not infected hcv but after how much time I know about my hcv status
    I read various sites but I cannot get reliable answer some say 3 month s some say 6 months I read ur comments after exposure I believe on u very much
    Please clerarify my doubts.
    Anti hcv test is conclusive after 3 month exposure or not if not
    If I take hcv rna after 4 month exposure ( at this time ) it is conclusive.
    Please help me and give some gold time to help me and other person also
    I want to know after how much time pcr hcv give conclusive result .

  16. Hello Dr. Tan,

    I got tested for hiv-1 RNA quantitative real time Pcr on 12 the day from the last exposure. The result says NOT DETECTED.

    What are chances of getting HIV when I do a duo test on the 28th day?

  17. Hai doctor I taken duo test my result is negative but I am worried about hiv 2 if any possible after 4 weak it can expose lot of site says 6 weak result is conclusive how doctor plz Iam worried about hiv2

    • The test is conclusive at 4 weeks, I do not believe you need to repeat the test.

      • Hai sir 39 days duo also negative can I move for normal life u did lot of test rna pcr 1 negative and 30 days duo negative , but I have leg pain and weight loss this any symptoms of hiv or something plz suggest me

        • Your tests are conclusive (as I have told you multiple times). Leg pain can be from any number of conditions – why don’t you see a doctor for a proper assessment instead of repeating the same thing multiple times on the website.

          • Yes doctor as you said I believe I don’t have hiv but with in one month I lost nearly 4 kg weight that’s y Iam worrying with anxiety thanks doctor for your copration in my life time I will not forget you , as per you Iam going to normal life thanksss

  18. Quick question took an rna test 10 days after expoure and got negative after doctors recommendation 9-11 days. Want to make sure of results being conslive or should i retest

    • Essentially conclusive, but RNA testing is still not officially recommended for HIV screening. As such, guidelines would recommend a repeat HIV combo test at 28 days.

      • Ok thats what i heard from several websites my 28 days is gonna be up soon

    • Took my 4th gen yesterday 30+ plus days after expoure. Just wanted to ask with the non reactive resuly should i still test agian 3 months from now

  19. Hi Dr.
    I have some question please help me Dr. today i take some test please comment
    1. duo test 74 day after PEP it is conclusive you have also answer and I agree with you
    2. HBsAG Non reactive.
    3. Anti HCV index value 0.12 Non reactive.
    4. HBsAB Results greater than 1000.
    My HIv test conclusive i know but i am confused about HBsAB please help me. I have take Hepatitus B vaccine in childhood.
    please help can i am in danger I dont about and I am not able to contact my doctor

  20. Hai sir I sex with unknown sex worker with 3 condom but I am not sure it’s tore or not after 17 days I taken rna pcr test the result is negative and 25 days 3rd generation result also negative and 4 gen combo p24 antibody and antigen test result negative in 30 days kindly suggest me were iam and any another test is required or not plzz dr last two days no sleeping

    • Your tests are conclusive and you do not need to worry any further. But in the future, use a condom properly (one at a time).

      • Hai doctor as you said my test is conclusive I believe on that but I have one doubt my both legs are getting pain and hand also it’s there any symptoms of hiv whether I have to take 6 th weak test . Becouse I am moving to native I worried on that my wife should not affect becouse of me plz reply doctor

        • If you have symptoms of concern, you should see a doctor for assessment. I cannot make any diagnosis over the internet. Other than to tell you that your tests are conclusive and it is not HIV.

  21. Jeremine

    Hi doctor, If I am tested negative 6 months post exposure, do I need another confirmatory test to prove that I am HIV negative? I am just worried because there are news online to say that false negative is possible, but not sure how common that is in Singapore? I do not know what kind of tests the doctor conducted, but he drew my blood and sent it to lab for test cause I had to wait for a week for results.

    Also, I read on this website that there are also people who will never develop the antibodies, so no matter how many tests they do, results are always negative. I am very anxious and worried that this can happen in my case? Is it possible that I never develop the antibodies, so that’s why my test results are negative? I am so worried it is affecting my sleep and concentration at work. Please help me.

    • You do not need further tests. Your tests are conclusive. Seronegative cases are exceedingly rare and can still be picked up with today’s testing methods.

      • Jeremine

        Hi doctor, thank you for the response. Can Elisa pick that up too? I thought that I have to do a p24 test. Because if it’s rare it still can happen to me?

  22. Hi.
    Dr. First i thank to you to help the needy person .I read your older comments. I really feel comfortable after read. I am not wasting of your gold time. Ask some questions .
    1. I take pep at 4 day after exposure confirm hiv+ male iam insertive but I am IAM sitting he is in top. Exposure is nearly 2 minute. During pep and after pep . I feel some time little red spot. 7 week after lymph node in my armpit. Which can go away after 3 day.After taking pep I have take lots of testing 5 time pcr rna quantitative for hiv 1 and every week duo test. My last test duo 4 th generation at 65 day after pep.

    1. My test are conclusive.
    2. Can i marriage. Because my marriage has been decided. I am in trouble.
    3. In my opinion my test are conclusive because guidelines say three month after pep antibody test conclusive and duo test able to detect antigen one week before antibody. Can u agree with me .
    If you give answer my questions point wise it really help to other needy person and me also.
    It’s my first comment and I wait your reply. Please give answer

    • Your tests are conclusive, you do not have HIV. Move on with your life.

      • Thanks Dr. Jonathan
        If I get a chance in my life to visit Singapure I definately meet you and Personally say to thank you.
        Thank you Thank you very much from my heart.
        I also try to visit singapure. personally because i like singapure country.

        Definately you do a great job
        I Cannot do this mistake again in my life

  23. Hai sir I had sex with sex worker with 3 condom but I don’t no it’s break or not . Then I taken rna pcr quqntitative test in 17days and 25 days combo hiv test 3rd gen another any test required I feel lot of leg irritation plzzzz suggest me

    • Your tests are essentially conclusive but for official clearance you would be advised a 4th generation combo test at 28 days post-exposure.

      • Thanks doctor today is my 30 day can I go for Weston blood test method plz suggest regard this test accuracy

        • You don’t need a Western Blot. Just do a 4th generation combo test. Western Blot is only done for confirmation if screening tests are positive.

      • Sorry doctor I again distrib u my rna pcr plasma test they shown for hiv 1 only any possible for hiv2 or Weston blood test is conclude both if a taken 30 th day

  24. Age:40, Gender: Male

    I had unprotected test 5weeks ago with sex worker , I mat doctor after and he suggested gualtive pcr hiv1 and p24 combo and hc and hb
    also all three result came bake negative.

    my question is after 5 week is both test are cinfrimativ not becuase my doctor said you dont requiredw more test now

    but from 8week I am geeting some pimple on my arms and face is this is related to early hiv symptoms.


    • Your HIV test is conclusive. Rarely hepatitis B and C may take up to 3 months window period. They have nothing to do with your pimples.

  25. hallelujah



  26. Hi Doc,

    I had unprotected oral with a lady and protected sex with possibility that condom broke (low). She is of unknown status.
    Had my PCR at 8 days (and 7 hours) which was negative.
    Following some worrisome possible ARS symptoms (neck lymph nodes) i had today (DAY 14) some general blood test including CRP which were all fine (blood counts, white cells etc) which i believe and hope that means im not dealing with acute infection.
    How accurate is the PCR in 8 days? Thanks

    • The PCR at day 8 is a decent indication, but you would need a repeat test at 28 days for conclusive results (with a 4th gen antigen/antibody combo test).

      • Thank you Dr for your response.
        I will do so.
        The good general blood screening plus a low CRP isn’t a good indication that i’m currently not dealing with an acute infection?

        • CRP has no real bearing on acute HIV infection.

          • OK thanks – Final question. Have you ever heard from your lab or from literature any Negative PCR HIV test at 7 or 8 days which eventually turned positive without any other risk factor?

  27. Hi doc, you said the HIV RNA test results are essentially conclusive for 10-14 days after exposure (though not used for diagnosis), except in few circumstances. So what are some of the circumstances?

  28. Is the hiv RNA PCR test results conclusive? Or still need to do the 28 day test? To what percentage is the RNA test conclusive?

    • The RNA test is not strictly recommended as a screening or diagnostic test for HIV. However, it is essentially conclusive from 10-14 days except in very few circumstances. I would still recommend a 4th gen combo test at 28 days for truly conclusive results.

  29. Sir please give reply of my question.
    U give the answers of all person question
    Please I have a swallon lymph node in my armpit. My test details I already sent to u .
    Today I go to my doctor he advise me for advance testing. Cost of testing is RS. 27000 in Indian currency . I have no money to pay. Your one word is my decision. I don’t believe my doctor so I stop my doctor I saw my lab report of Dr. Lal path lab India’s most reputed lab. He does not believe. Testing in his lab is good I asked about his test his answer is it included cd4 count and many hiv test .

    Sir please reply

  30. Doctor today I take duo test at 3 month after exposure and 8 week 1day after pep I feel a swallon lymph node in my armpit. my index value is 0.19 non reactive last Wednesday when I take duo test index Vale is 0.15 my index value increase
    1. My test are conclusive if not after how much time it conclusive .
    1. If this swallow lymph node is due to hiv test then test show up
    2. I read dr.tan say that after 3 month exposure in pep case it is enough if modern based hiv testing done . Tell which test I taken I taken duo test 4 generation .
    Dr. Please give answer to my question because my Dr. Is unable to give answer she is a infection doctor not hiv specialist

    Thanks very much .
    Dr. U do really a very great job
    Please help me

  31. Hi
    Doctor after insertive anal exposure with hiv+ msm I get pep around 88 hours. After completed pep I take duo test and pcr rna at 4 week after pep they both are negative. After this I take duo test and pcr rna at 7 week 3 day after pep and 12 week after pep they both are negative index value 0.15 I feel red spot below my armpit and and one swallow lymph node in my armpit.
    Help me sir can my test conclusive or after how much time my test conclusive I really thankful to u if reply please

    • Your test is conclusive, you do not have HIV. You do not need to re-test. Move on with your life.

      • Sorry sir I take duo test and pcr rna 7 week 3 day after pep and 12 week after exposure .my test are conclusive tell me sir. Help me sir I wait ur reply

  32. HI, Doctor
    after insertive anal exposure with HIV+ i taken Pep around 92 Hours. After this I taken duo test and RNA HIV 1 both are negative at 11 week exposure. I again take duo test at 12 week after exposure and 7 week after PEP duo test negative.
    comment sir can it is conclusive or i need wait 5 week.
    Give your doctor opinion here is available 4 the generation duo test only what can i do i feel little red in my neck and one in my armpit.
    sir give your opinion after how much time after my test conclusive there is only 8 day left for exposure

    • I believe your tests are conclusive and you do not have HIV.

      • hi doctor
        Thanks for your opinion
        i feel one red spot in foot also. sir after how much time my test conclusive officially.
        please comment sir i wait your reply
        I am really very scared

      • Hi doctor today I feel a pain in armpit and feel a swallon node in armpit .what can I do tell me can I start seroconverted. I have taken duo test and pcr rna last Wednesday in which index value is 0.15 and pcr target not detected.
        Please give me advice every minute kill me can I need take more test
        Help me begging to you please give me right advice what can I do
        This test taken me after 12 week after exposure to hiv + msm sex may maximum 2 minute iam a insertive and 7 week 3 day after pep

        • I have told you multiple times – your tests are conclusive, you do not have HIV. Stop spamming the comments and move on with your life.

  33. sandeep

    I am contniously loos weight I am scared

  34. sandeep

    Hi doctor
    I take duo test at 11 week 4 day after exposure and 47 day after pep i take pcr rna test and duo test index value 0.09 and pcr target not detected after exposure. I also take pep at 96 hours after insertive exposure with hiv positive male I comment already and u give answer also but I see one red spot below my armpit and red tiny spot in my neck. Tomorrow is my 12 week after exposure . If I take test tomorrow it may be conclusive
    please comment sir. Help me I really thankful to IAM in India due to that reason I am not come in u r clinic

  35. Hello Dr,

    Is a negative result of HIV RNA Qualitative test after 9.5 days (9 days and 16 hours) a good encouraging indication?

  36. depreseed

    Sir after insertive anal exposure with hiv + person I take pep around 95 hours on 30 day after completed pep I see a red spot below my armpit on same day I take duo test and pcr rna they both are negative . After 2 day I see 2 more spot on same side of back doctor say it’s related to hiv lesion .
    What can I do please comment I wait you advice can take again duo test or wait and what’s my status in your opinion
    No fever no swallow lymph node

  37. niranjan

    hi doctor,

    my friend have a Unprotected sex with a unknown girl, from the second day he had lymph beside his ears, then he consult with me, i said its normal since he had over drinks two days before. then for the next two weeks he had some pink rashes on backside and Small dot like rashes on his sorrounding layer of penis, then after 26 days from exposure since i am a doctor we took a Anti HIV Elisa, Syphilis, STD test for him,The result is negative. but still he is worrying a lot because of these symptoms, So Please Advice on this, Kindly reply sir

    • If he has symptoms of concern, he should see a doctor who can assess him properly. It could be simple balanitis, or it could be anything else. His HIV and syphilis testing is not yet conclusive as it is still within the window period.

  38. sandeep

    I read in ur page pcr 100% conclusive after 10-12 days. I also taken pcr for hiv 1 and Elisa test at 17 day after pep. But my doctor say always it’s good indicator but not conclusive. You wait 3 months. Tomorrow is 28 the day after pep . I decided to go for Elisa test 4 generation .
    Please help me

  39. sandeep

    Dear dr. There is no method to get conclusive result before 3 month
    I beg to u please comment
    If I come in your clinic can u give me conclusive result
    I begging please comments
    Because every day kill me 🙏🙏🙏🙏🙏

    • You are welcome to come by our clinics for testing. But it really is not necessary. Your 4th generation test is essentially conclusive at 28 days, even with PEP. A repeat test at 3 months is just for precaution, but there have been no cases of negative test post-PEP at 28 days turning positive later.

      • sandeep

        But I am taking pep at 93 hours

      • sandeep54321

        i get conclusive result 12 week or 90 day after exposure it confuse me please tell me
        please comment

        • 12 weeks is fine.

          • sandeep

            I am really very depressed at that time i see one red sport at 30 day after pep I taken duo test and pcr rna on same day. pcr rna report target not detecable and duo test also non reactive index value 0.1.after 3 day I feel 2 more spot doctor say it’s relate to hiv lesion..
            Sir please tell me something what can I do can I check again blood test or wait please give advice

          • It is not HIV. You do not have HIV. You do not need to repeat any further tests. Move on with your life and stop being paranoid.

          • sandeep

            Please reply

  40. Anthony

    Hi Dr Tan,

    I had unprotected (receptive, M2M) oral sex with some risk factors (ejaculations, potential gum scratches from brushing) and tested negative on the PCR RNA test 10 days after exposure. My clinic said that they generally recommend a DUO test as a follow-up 28 days after, however the nature of my exposure and the PCR RNA result almost warrant a negative.

    Would you recommend retesting?

    Thanks you so much for all this useful info on the site!

    • I would say your risk is close to zero. But if you are still concerned, we would recommend the 4th gen combo at 28 days post-exposure for conclusive results.

  41. sir,
    i take pep at 93 hours after anal exposure with hiv+ transgender. On the time of pep i take PCR RNA and elisa test index value 0.07 they both are negative. After completed pep i take pcr rna at 12 day and again I take PCR RNA for HIV 1 and elisa test 4 the generation test they both are negative and Index value 0.09.
    This tests are conclusive or i need a test at 28 day after completed PEP.
    please comment

    • Your tests are essentially conclusive. But post-PEP guidelines still recommend a final test at 3 months as a precaution. You can stop worrying and move on with your life.

      • sandep

        Thanks doctor
        sorry for mistaken in above i take PCR rna for HIV 1 first at 12 th day after completed PEP and second on at 17 day after completed PEP for HIV 1 only can i need to take PCR for HIV 2 also. Here is only PCR RNA for HIV 1 available.
        I really very Thankful to you.
        please reply

        • sandep

          sir how much time after after pep is good result of duo test and PCR RNA

      • sandep

        sir please reply for my next comment

      • sandeep

        Please comment sir there is no method to get conclusive result before 3 months I begging u if I come in your clinic you can give me conclusive result I am in India please help 🙏🙏🙏🙏🙏🙏

        • sandeep

          sir today is my 30 day after completed PEP i take elisa test 4th generation my index value is 0.1. sir when i take elisa test on 17th day after PEP on that time my index value is 0.09.
          sir how much i safe .
          I feel today a small sport below my armpit i dont know how.
          please tell me this was symptoms or not.
          I again remember i take pep at 93 hours.
          my history is above

          sir, please reply i wait.
          thanks doctor

          • Your test is essentially conclusive, no HIV. Repeat a test at 3 months post-exposure as per guidelines. But relax, stop worrying and move on with your life.

  42. Hi Dr,

    I had a exposure with a female CSW on 1 July 17 11.30pm. I had unprotected insertive oral sex with the lady ( I’m male) and protected vaginal intercourse with the lady after. I’m worried sick now about HIV. When should i come in to do the HIV RNA test? Any other tests i should do as well? Also how bad are my chances if cintracting HIV?

    • Hi, I would say your overall risk is fairly low. Even unprotected vaginal intercourse with a known HIV positive female results in just 1:263 – 1:2500 transmissions. Oral sex does not confer any significant risk. If you wish to do an HIV RNA test the earliest it can detect is 10-12 days post-exposure. More common STDs that you may test for are those that cause urethritis, such as chlamydia and gonorrhea. You may visit any of our clinics for a consult and evaluation.

  43. sir,
    my another question is that i have taken hepatitus b and hepatitus c test at 50 day after exposure with transgender. sir please give advise i am safe or not my test result is negative. it may be conclusive if not then on which day i do test. please reply

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