Question 1

After potential HIV exposure, I have done multiple HIV tests over 9 months, and all results were negative. My reports for the past three months are as follows 0.2 s/co, 0.2 s/co, and Antibody + p24 antigen test by ECL method is 0.2 s/co. Do I need to undergo any further HIV testing, or are these results conclusive?

Question 2

Sir, I have a doubt regarding HIV testing. If a person tests negative at 6 months, 1 year, 5 years, or even 10 years after exposure, but later tests positive, is it true that this depends on the immune system? Does this mean there is no conclusive test for HIV?

Question 3

I was accidentally injected with a potentially contaminated needle at a clinic. Concerned about HIV risk, I went for an HIV combo test 56 days after the incident at my nearest ICTC centre. The test result was negative. The ICTC staff mentioned that if there is direct exposure to HIV infected blood, it can show in the test after 28 days. I would like a specialist advice regarding:
Should I get tested again?
Which test is recommended now?
Is 56 days sufficient to conclude that I am HIV negative?
I have heard that HIV transmitted via sexual contact may take longer to appear in blood tests compared to needle exposure, is this true?

Doctor, I had a proviral DNA test done 55 days after exposure, and the result was negative. Do I still need any further testing? I am getting married next month and want to be sure.

More HIV DUO (HIV P24 ANTIGEN, HIV 1 & 2 ANTIBODY) Health Queries

Sir, I have a doubt regarding HIV testing. If a person tests negative at 6 months, 1 year, 5 years, or even 10 years after exposure, but later tests positive, is it true that this depends on the immune system? Does this mean there is no conclusive test for HIV?