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A member asked:
Potential exposure, i had receptive anal sex with no condom, unknown on status. had a negative 4th gen hiv test at 38 days. do i truly need to test 7 days later at 45 days? what are the chances ill turn positive after 45 days? thought 4 weeks was it?
3 doctors weighed in across 2 answers
In theory, 4 weeks is sufficient for the HIV AgAb (4th gen) HIV blood tests. But more recent evidence indicates rare cases that took as long as 45 days. The chance your test will become positive is extremely low, but not zero.
Answered 7/29/2023
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It is considered to be 45 days to be safe. So even if it was neg suggest follow protocol.
Answered 8/23/2023
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