I took an HIV RNA PCR test at a diagnostic centre after 90 days of exposure, and the result was negative. Can the HIV RNA PCR result be inaccurate depending on the diagnostic centre? Does the reliability of the result vary between centres, and how important is it that the centre is certified for HIV RNA PCR testing? Please guide me.

Answered by 1 Apollo Doctors

Dr Kamran Mohammed

General Practitioner

MBBS
FIDM
5+ Yrs

Consult Now

HIV RNA PCR accuracy is high after 90 days. Certified labs show consistent results. Negative test means likely uninfected. Repeat only if lab is questionable. Discuss concerns with a doctor.

Dr. Kamran Suggests...

Take a HIV PCR Test Test

Book HIV PCR Test Test

Answered 15/09/2025

More HIV-1 RNA PCR - QUALITATIVE Health Queries

View all

I had unprotected sex with a sex worker. My HIV RNA PCR test at 28 days was not detected, my HIV antibody test at 86 days was non reactive, and my CD4 count at 87 days is 503 cells per microL, with CD8 count 685 cells per microL. Could you please help me understand if these results confirm that I am HIV negative, or if I should take any further tests or precautions?

Answered by Apollo Doctors

What does exposure mean? Which period counts as the exposure period? Also, what is the window period, and is three months sufficient for a conclusive HIV test result?

Answered by Apollo Doctors

I had unprotected sex with a sex worker. After 28 days, I took an HIV RNA PCR test, which came back as not detected. However, after 80 days, I took a Western blot test, and the result was positive.

Answered by Apollo Doctors

Disclaimer: Answers on Apollo 247 are not intended to replace your doctor advice. Always seek help of a professional doctor in case of an medical emergency or ailment.