Last updated: Thursday, 25, October, 2007
10 mL blood in plain tube.
Immunoassay; detection of p24 anitgen. See also HIV-1 RNA.
Further investigation of results in the HIV antibodies/antigen combined assay.
A positive result indivated HIV infection. The p24 antigen is positive in early (acute) and late phases of the infection, but is an insensitive test and a negative result does not exclude HIV viraemia.
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