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A member asked:
What is the window period for an hiv 4th generation test and when it can be considered conclusive?
A doctor has provided 1 answer
4-6 weeks: Almost all (~98%) of people with new HIV infections have positive HIV antigen-antibody (AgAb, "duo", 4th generation) tests by 4 weeks, and a negative result at that time is very reassuring. But on rare occasions it takes up to 45 days (6 weeks). Although official guidelines from many agencies still suggest waiting 3 months, most experts agree that advice is outdatted and 6 weeks is conclusive.
Answered 4/20/2023
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What is the window period for p42 antigen/ antibody dual 4th gen HIV test? And the window period for HIV RNA PCR test? When can it be conclusive?
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Please tell me conclusive hiv2 window period. I tested negative on 21/29/43 day by hiv 4th gen test. Exposure- protected vaginal sex with hiv2+ girl. Symptom- body ache/muscle joint pain?
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Hi Dr. Would a 2-1-1 (on demand) PrEP, in which 2 tabs of Truvada before sex exposure and 1 tab for next 2 days after exposure, increase the window period for 4th gen HIV test? if yes then when would be the best period for conclusive testing? Thanks?
Dear doctors i wont understand Hiv window period some say 3 mths conclusive some says 6 mths, cdc says if you tested after 3 months you don't have Hiv, ? I got test 4th gen rapid 15 weeks is it sufficient to rule out hiv? And Yes I learned my lesson?
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