Get your health question answered instantly from our pool of 18000+ doctors from over 80 specialties

134 Doctors Online
Doctor Image
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

I will be looking into your question and guiding you through the process. Please write your question below.

Had unprotected vaginal intercourse. Negative for HIV DNA by PCR tests. Suggestion?

Answered by
Dr.
Dr. Srikanth Reddy

Psychiatrist

Practicing since :2007

Answered : 2770 Questions

default
Posted on Mon, 21 Jan 2013 in Sexually Transmitted Diseases
Question: I had unprotected vaginal intercourse with a female that I met at a bar. Out of anxiety, i was tested through LabCorp, using the HIV DNA by PCR tests at nearly 80 hrs past the unsafe event. I spoke with the counselors at the testing lab and they all said that the results, which were negative, are extremely accurate and reliable at this time bc the tests pick up detection as early as 48 hours. They say that I am fine and I have also heard from other doctors that their information was accurate. Your thoughts?
doctor
Answered by Dr. Srikanth Reddy 2 hours later
Dear XXXXXXX
Thanks for using health care magic for posting your query.

PCR is a very accurate way of detecting an HIV infection. It detects the Viral proteins rather than antibody response, making it more reliable, specific and capable of early diagnosis as it doesn't wait for the immune response to develop. It can detect an infection even in its window period.

According to the recent literature it can detect 96-98% of the cases when done within a month. Now that’s a fair figure. The only problem is that you got the test done in 80 hrs after exposure. Although it's good enough to detect an early infection, it will be more reliable at the end of 1 month of exposure. For a disease like HIV I hope you won't mind getting rechecked at the end of one month.

Further you should take care not to indulge in such risky sexual acts in future. I hope you understand the risks involved.

Hope I have answered your query. I will be more than happy to help you if you need any further clarifications.

In case you don’t need any further clarifications, you can close the discussion and rate the answer.
Wish you a good health!


Above answer was peer-reviewed by : Dr. Shanthi.E
doctor
default
Follow up: Dr. Srikanth Reddy 35 minutes later
So is my negative result useless ay 80 hrs? Or is it a good indicator of my final results? Why would the counselor tell me it was very reliable and accurate?
doctor
Answered by Dr. Srikanth Reddy 11 minutes later
Hello XXXXXXX
Thanks for your follow up question.

As you rightly said, your negative result at 80 hrs is a good indicator of your final results. Probably your counselor might have meant to say that 96-98% there is no chance of your having contracted the infection. That is fair enough to be reliable and accurate. But then your life is more precious than to ignore the 2% value.

With a negative result you can stay assured that your final results will also come negative but on the safe side get a test done at the end of one month as well.

Hope I have answered your query. I will be more than happy to help you if you need any further clarifications.

Wish you a good health!


Above answer was peer-reviewed by : Dr. Shanthi.E
doctor
premium_optimized

The User accepted the expert's answer

Share on
Question is related to
Diseases and Conditions

Recent questions on  HIV

doctor1 MD

hi, im 17 and ive had sex before about 3 months ago i had unprotected sex about 2 months later to now i started feeling like pee was stuck in my shaft no matter how many times i pee, it doesnt burn when i pee and i think tthere was white/cream on the top of my penis and both sides of my penis hole get stuck together too, im not sure if i have an std please help?

doctor1 MD

Hello,
Im after some advise really
Im 24 I have been having chemotherapy for hodgkins lymphoma for the last 3 years and last september i had a bone marrow transplant from donor cells, all through the treatment i was still having my periods but last year they put me on a tablet which stopped me from bleeding as it was too dangerous. when i stopped this tablet at christmas time i bleed but havent since. the doctors are still hopeful my periods will return and have said i can start taking my contraceptive pill as soon as they do but me and my boyfriend of 4 years both hate using condoms and get no enjoyment out of them and therefore we havent been having a love life really and i dont want to wait up to the year the hospital is saying what are my options?

doctor1 MD

Im having constant head aces. Lower Back aces. No ministration. 2weeks late. Used condoms with my husband could I be pregnant or something else. Been having pain sinve last Friday. Im 2months postpardum with possible thyroid issues. Now incontanance

doctor1 MD

before 8 months i had a sexual contact with prostitute girl without condam, and after 15 days i had pain in my panis and headche to till today.but i did HIV and other sexually transmitted diseases of blood test 2 times nothing can be found,so here iam wondering for good suggestion,can you help me?

doctor1 MD

I just had a mutual masturbation session with a sex worker However she removed her hand from inside her vagina and used it roughly on my penis in a hand job Can I get HIV from this means which I was not able to stop after it occurred to me ?

doctor1 MD

i bought food the food was in a container with a plastic at the top covering the container how ever i notice the plastic on 1 container was slightly open on a container with food inside any RISK for hiv hep b,c

doctor1 MD

Dear doctor thanks for your valuable reply however my further query is for last two weeks I have a mild rash under my eye which is persistent and is not going away...I had read somewhere in the webmd website that facial rashes are the first sign...