How reliable is a 4th generation HIV test at 75 days after unprotected anal sex?
The good news is that a 4th generation test (also called an antigen/antibody test) at 75 days is considered highly reliable. Here's why: The window periods for a 4th generation test are:
- Lab blood draw test: 18 to 45 days after exposure
- Rapid Show Full Answer
How reliable is a 4th generation HIV test at 75 days after unprotected anal sex?
The good news is that a 4th generation test (also called an antigen/antibody test) at 75 days is considered highly reliable. Here's why: The window periods for a 4th generation test are:
- Lab blood draw test: 18 to 45 days after exposure
- Rapid finger-stick test: 18 to 90 days after exposure
At 75 days, you are well past the window period for a lab-based test, meaning a negative result would be conclusive. If you took the rapid finger-stick version, you're within the tail end of the window period, but still very likely to get an accurate result. To be completely certain, it's worth confirming with a healthcare provider which specific version of the test was used. If it was the rapid finger-stick type, testing again at or just past 90 days would give full peace of mind.
4 days ago
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