A member asked:

Can you get tested positive for the std, hiv using the p24 antigen & then if those results are received within the 3 day window of exposure go on pep?

4 doctors weighed in across 2 answers
Dr. Edgar Mendizabal answered

Specializes in Internal Medicine

Yes: P24 becomes negative when you seroconvert. Proceed with rx even before you convert.

Answered 10/15/2013

4.8k views

Thank
Dr. Joel Gallant answered

Specializes in Infectious Disease

No: A p24 antigen would not be positive within 3 days of exposure. By the time the antigen is positive, you're already infected and it's too late for pep.

Answered 10/20/2013

4.8k views

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