- HIV-1 infection as documented by any licensed ELISA test and confirmed by Western Blot or other confirmatory test at any time prior to study entry. Acceptable alternative confirmatory tests are plasma HIV-1 RNA, HIV-1 culture, HIV-1 antigen, or a second antibody test by a method other than ELISA. Alternatively, if an HIV-antibody test result is not available, two HIV-1 RNA values >2000 copies/mL, drawn at least 24 hours apart, performed by any laboratory that has clinical laboratory improvement amendments (CLIA) certification, or its equivalent, may be used to document infection.