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Are HIV And STD Tests Done 21 Days After Exposure Conclusive?

Posted on Thu, 7 Jan 2016

Question: Hi
I had unprotected oral sex with a transsexual. Both performed and received. She came outside and I have rubbed the semen off and then performed again. I got myself hiv rna qualitative and 4th gen antigen and antibody test along with other stds. All came negative at 21 day after exposure testing. I am currently experiencing rashes on my chest. I am scared did my test yeild false negative. Kindly guide me through...

Answered by Dr. Dr. Kakkar (34 minutes later)

Brief Answer:
These tests are reliable

Detailed Answer:
Hello. Thank you for writing to us

I have gone through your query and I have understood your concern.

Though performing and recieveing Oral sex does carry a smaller risk of acquiring Hiv however, a negative RNA PCR as well as 4 the generation screening test almost certainly rules out Hiv.

Regards

Above answer was peer-reviewed by : Dr. Chakravarthy Mazumdar

Follow up: Dr. Dr. Kakkar (2 minutes later)

I did those tests at 21days. Is it conclusive? I have rashes all over my chest. Very worried and concerned

Answered by Dr. Dr. Kakkar (1 minute later)

Brief Answer:
Conclusive

Detailed Answer:
Hi.

Yes, these are conclusive. A 4 th generation test as well as RNA PCR test can detect Hiv as early as 2 weeks.

Regards

Above answer was peer-reviewed by : Dr. Chakravarthy Mazumdar

Follow up: Dr. Dr. Kakkar (6 minutes later)

If i have virus like cmv or ebv does it make any difference in the test? Does having these virus affect the window period?

Answered by Dr. Dr. Kakkar (36 minutes later)

Brief Answer:
Other viruses do not affect test results

Detailed Answer:
Hi.

No. It does'nt affect the test result if you have either cmv or ebv.

Regards

Above answer was peer-reviewed by : Dr. Chakravarthy Mazumdar

Follow up: Dr. Dr. Kakkar (2 days later)

These are the rashes that came out on week 4-5. I did my test on 21st day rna and 4th gen both negative. Did another test at 30 day mark.
What are these rashes? Are they related to hiv?
Will my 30 day test turn positive?
Do i have hiv?

Answered by Dr. Dr. Kakkar (5 hours later)

Brief Answer:
Acne

Detailed Answer:
Hi.

I have reviewed the Images. These are acne on trunk.
I suggest you to use a topical antiacne gel e.g Clindoxyl gel twice daily for a few days. 30 day test should come negative.

Regards

Above answer was peer-reviewed by : Dr. Chakravarthy Mazumdar

Follow up: Dr. Dr. Kakkar (2 minutes later)

Thanks for your advice.

Answered by Dr. Dr. Kakkar (0 minute later)

Brief Answer:
Welcome

Detailed Answer:
Hi. Thank you for writing to us

Regards

Above answer was peer-reviewed by : Dr. Chakravarthy Mazumdar

Follow up: Dr. Dr. Kakkar (28 minutes later)

One last question,
How does one differentiate between a acne,eczema, mono rash or a cmv rash. When symptoms started in 2 week with sore throat and two rash at the side of neck and a small blister on lip. Then i went and got the test done at 3rd week. However after the test result, at 4th week i got these rashes on my chest. And i m freaking out whether it is eczema mono rash as those are stated to be clinical symptoms for hiv. If you can share some insight on it it would be good.

Answered by Dr. Dr. Kakkar (19 hours later)

Brief Answer:
This looks like acne

Detailed Answer:
Hi.

This one looks very much like an acne rash. Infectious mononucleosis rash is macular or maculopapular rather than being papular or nodular like this. Cmv happens in fairly advanced hiv infection or AIDS and can be diagnosed by lab tests.

Regards

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Above answer was peer-reviewed by : Dr. Chakravarthy Mazumdar