Anonymous
i had a protected vaginal sex with a sex worker but i licked her vagina without any protection or barrier and i tested for HIV with 4th generation cmia ag/ab test after 7 weeks and it came back negative. so is this test considered conclusive after 7 weeks of exposure because I'm to much worried
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Anonymous
Hello,

Thank you for your inquiry. From what we gather from the question, you were asking about the accuracy of a negative result from a 4th Generation test conducted 7 weeks after a Low Risk exposure (evidence of transmission occurs through these activities when certain conditions are met).

It is very responsible to access HIV testing after a risky activity. Protected vaginal or anal sex, as well as performing oral sex without a barrier, are both considered to be low risk activities. This is because they can both meet the three components of the [Transmission Equation](https://www.aidswindsor.org/healthy-me/hiv-transmission/) when certain conditions are met, such as potential breakage of the condom during intercourse.

A 4th Generation HIV test is considered conclusive after 6 weeks by most HIV specialists because it is able to detect 99% of HIV infections at this time (1). It is important to note that some physicians and guidelines recommend testing 12 weeks post-exposure for completely conclusive results. Since your test was performed 7 weeks after exposure it is very likely that the result is accurate.

Recommendation: Refer to a physician for an HIV test 12 weeks post-exposure for completely conclusive results.

Regards,

AIDS Vancouver Helpline/Online, Marie
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