Test results for 17 HIV-infected persons with reactive rapid test results initially confirmed as either negative or indeterminate on Western blot or by indirect immunofluorescence, 17 health departments, 11 August 2004 to 31 December 2005.

EIA = enzyme immunoassay, IFA = immunofluorescent assay, WB = Western blot, Neg = Negative, Pos = Positive, Indet = Indeterminate, ND = Not doneIf test result not bracketed, it was conducted by local laboratory.*Bands interpreted as equivocal[ ] results reported by CDC lab where Genetic Systems HIV1/HIV2 Plus O and Genetic Systems HIV-1 Westen blot were used unless other test indicatedaVironostika HIV-1 Microelisa System, bioMerieuxbOrasure HIV-1 Western blotcBio-Rad HIV-1/HIV-2 plus OdGenetic Systems HIV-1 Western bloteFluorognost HIV-1 IFAfCambridge Biotech HIV-1 Western blotgbDNA Versant HIV RNA Assay (conducted 52 days after initial discordant result-viral load not reported)hAmplicor HIV-1 Monitor v1.5iGenetic Systems rLAV EIAjMultispot HIV-1/HIV-2 rapid testkUnknownlRepeat confirmatory test not done at CDC because initial Western blot found to be positive