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A member asked:
Does pcr rna hiv-1 detect also hiv-2, if so why do a certain dr recommend doing pcr rna hiv-2 test when other doctors here saying pcr rna hiv-1 detects both 1 & 2 types of hiv. neg pcr rna hiv-1 at 9 months after exposure. redo at 12 most? 4 gen neg?
A doctor has provided 1 answer
The RNA tests usually used in the US do not detect HIV2, but the standard antibody tests always detect it. Your negative AgAb (4th generation) blood test proves you don't have it, no need for further testing unless you know you have been exposed to HIV2. HIV2 is exceedingly rare in the US, only a few hundred total known cases over 30 years, all in African immigrants or their longstanding partners.
Answered 8/22/2021
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