Thanks for the amazing service!!
I had a low risk exposure 11 weeks ago when I had vaginal intercourse with two legal prostitutes. I used condoms which I am 100% did not fail in one of the encounters then during the other I am certain the condom was put on and remained during penetration (which was short) but do not remember taking it off thus providing some anxiety. I have done a fourth generation hiv test (blood drawn from vein and sent to lab)and an Insti test at 45 days (around 6 weeks) followed by another rapid insti test at 65 days (around 9 weeks), a fourth generation test (blood drawn from vein) at 72 days (around 10 weeks) and finally an insti rapid test at exactly 11 weeks. Everything has come back negative. The doctors and nurses at the clinics i did those test have told me they were negative and refuse to test me again, I just really want to know that I am safe as I am entering a new relationship (my new partner being aware of the whole situation). And both would like to ditch the condoms and Im still nervous even though every testing services have told us I am all good. Can I really trust my results?
I really look forward to your answer!
Thank you for your inquiry. From what we gather from the question, you were asking about the reliability of your negative test results. From our understanding, you received two 4th Generation EIA tests; the first you received at 6 weeks post exposure, and second around 10 weeks post exposure. For good measure official HIV testing guidelines recommend re-testing after 12 weeks post exposure. However, due to the advanced technology used by the 4th Generation combination test, most HIV specialists would consider a negative result at 6 weeks conclusive (meaning accurate and reliable).
Please consider the following: Fourth-generation HIV tests can detect HIV infection in 50% of people by 18 days after infection; 95% of people by 34 days after infection; and 99% of people by one and a half months after infection (1). The 4th Generation EIA is also considered to be up to 99.6% accurate, meaning there is an extremely low possibility of testing error (1). In your case, each of 4th Generation tests you received from 6 weeks forward have an extremely unlikely chance of producing a false negative result.
If nothing else has changed, meaning you haven't engaged in any activities that have put you at risk for HIV transmission, then you may expect your results to keep on coming back negative at further retesting.
Recommendation: There is no need for further HIV testing with the scenario provided, please refer to a physician for other health related questions.
AIDS Vancouver Helpline/Online, Cody