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P24 Antigen test

Jun 26, 2000

Dear Doctor, Could you explain the value of P24 antigen testing as compared to the standard Elisa/Western Blot testing? Any information would be helpful. Thank you.

Response from Dr. Holodniy

P24 antigen is a protein of the HIV virus. It circulates during the time of acute infection. It is usually only found during the period before the antibody tests are positive. In rare patients, you can see it for a few days to weeks afterward. There is a commercially available test for it.


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