
How Soon Is PCR Test Advisable After Intercourse?

HIV RNA PCR sensitive after 10-14 days exposure
Detailed Answer:
Hi
Thank you for query. I am Dr Bharatesh D Basti answering your query.
Welcome back to health care magic.
HIV 1&2 RNA PCR test is very sensitive (99%) after 10-14 days after exposure. It remains positive for life unless treated by anti-HIV drugs or immunosuppressive drugs or affected by immunosuppressive disease. The test is good after 10 - 14 days exposure.
HIV 1&2 antibodies can appear 2-6 weeks after exposure latest by 3 months. They are considered conclusive after 3 months.They remain positive forever too.
Hepatitis B PCR can be positive after 21-30 days exposure. But it's levels come down later as the bodies immune system takes over and antibodies appear. It is difficult to have conclusive results with this test if negative results.
Later only the HbSAg(antigen) or the antibodies can be detectable.So HBSAg or antibodies to hepatitis B tests are also done to have conclusive results.
You can get back for any clarification.
Thank you
Dr Bharatesh D Basti
Dermatologist and venereolgist


HIV/hepatitis B it is helpful
Detailed Answer:
Hi
Thank you for follow up query.
It will be very helpful for HIV and Hepatitis B after 30 days. These tests are unlikely to come positive later after 3 or 6 months.
HPV in males is not really done and required. You can get it done as a baseline. These also does not vary after 3/6 months.
You can get back for any clarification.
Thank you
Dr Bharatesh D Basti


HIV PCR will be positive later too.
Detailed Answer:
Hi
Thank you for follow up query.
HIV RNA PCR can detect as early as 10-28 days post exposure. This is the best test during this period.
This detects HIV RNA material. This remains positive later .These counts reduces if treated with antiretroviral drugs or immunosuppressive drugs. They are usually not used as diagnostic tests though it is helpful. It is used to monitor treatment to see whether there is decrease in viral counts.
So will be positive later too.
Antibodies can be formed by 2-6 weeks. So these are not reliable in early phase. Once formed Antibodies too remain positive . They are considered conclusive tests after 3 months.
You can get back for any clarification.
Thank you
Dr Bharatesh D Basti


Wish you safe and good health
Detailed Answer:
Hi
Thank you for wishes.
Wish you safe and good health.
You can get back for any clarification.
Thank you
Dr Bharatesh D Basti

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