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Is p24 antigen test a good test

Jul 26, 1999

Dr. It has been four weeks since I was exposed to aids. Ten days after exposure I took a p24 antigen test, which was negative. I have not shown any flu like symptoms that are sometimes common. How reliable and valid is the P24 antigen test? What are my chances of still being positive, and should I be re-tested? Thank You

Response from Dr. Holodniy

That test by itself is not reliable. Antibody testing should be performed at 1 and 3 months. MH

Does false positive testing exist?
PEP and PCR #2

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