Which lab tests are performed to diagnose HIV infection?

Updated: Jan 02, 2019
  • Author: Robert J Carpenter, DO, AAHIVS, FACP; Chief Editor: John Bartlett, MD  more...
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Patients with suspected acute human immunodeficiency virus (HIV) infection should undergo serum testing for HIV antibody and HIV antigen using HIV nucleic acid amplification, HIV p24 antigen, or polymerase chain reaction (PCR) testing for viral load. Beware of false-positive HIV viral load test results (< 15,000 RNA copies/mL blood). [6, 5] For more information, see Rapid Testing for HIV and Laboratory Assays in HIV Infection.

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