P 24 Antigen: What does it mean?
Mar 9, 2003
My wife has been giving blood every few months for years. Yesterday she received a letter stating she was positive for p24 antigen. The letter stated indepth experimental testing revealed however she was not positive for HIV but could no longer give blood. If not HIV, what can cause this P24 to occur? Is this contagious?, What does all this mean?
Response from Dr. Holodniy
P24 antigen test measures a protein from HIV. It can rarely result in a false positive test. It is used by many blood banks in the screening process for HIV infection of the donated unit. There are several other tests that are also used. It appears these other tests were negative.
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