Hello. I am male. I received oral sex from a guy who is HIV positive. It last no more than 30 seconds. That was all. I waited 40 days and then I did test 4 generation Ab/Ag. It was negative. I read that after 6 weeks negative result is conclusive. Should I test again after 12 weeks?
Thank you for your inquiry. From what we gather from the question, you were asking about the risk of acquiring HIV after receiving unprotected oral sex. From the information given, this scenario is determined to be Negligible Risk (there is no evidence or no documented cases of transmission. However, there is a theoretical possibility of transmission under certain extenuating circumstances).
The scenario mentioned above does not meet the three components of the Transmission Equation because saliva is not a bodily fluid that can carry the HIV virus. It is important to note that this scenario is determined to be of negligible risk due to the theoretical possibility that the saliva was mixed with large amounts of blood, which was then able to gain direct access to your bloodstream through the head of your penis.
At 40 days post-exposure the 4th generation test that you accessed is considered to be more than 95% effective (1). Since the activity you engaged in is negligible risk, you do not need to access any further HIV testing.
Recommendation: There are no evidence or no documented cases of transmission. Refer to a healthcare professional for more personalized answers.
AIDS Vancouver Helpline/Online, Marie