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.

<p>EIA = enzyme immunoassay, IFA = immunofluorescent assay, WB = Western blot, Neg = Negative, Pos = Positive, Indet = Indeterminate, ND = Not done</p><p>If test result not bracketed, it was conducted by local laboratory.</p>*<p>Bands interpreted as equivocal</p><p>[ ] results reported by CDC lab where Genetic Systems HIV1/HIV2 Plus O and Genetic Systems HIV-1 Westen blot were used unless other test indicated</p>a<p>Vironostika HIV-1 Microelisa System, bioMerieux</p>b<p>Orasure HIV-1 Western blot</p>c<p>Bio-Rad HIV-1/HIV-2 plus O</p>d<p>Genetic Systems HIV-1 Western blot</p>e<p>Fluorognost HIV-1 IFA</p>f<p>Cambridge Biotech HIV-1 Western blot</p>g<p>bDNA Versant HIV RNA Assay (conducted 52 days after initial discordant result-viral load not reported)</p>h<p>Amplicor HIV-1 Monitor v1.5</p>i<p>Genetic Systems rLAV EIA</p>j<p>Multispot HIV-1/HIV-2 rapid test</p>k<p>Unknown</p>l<p>Repeat confirmatory test not done at CDC because initial Western blot found to be positive</p

Repeat confirmatory testing practices after a reactive rapid HIV test and negative or indeterminate WB/IFA.

<p>WB = Western blot, IFA = Immunofluorescent assay, OF = oral fluid, IND = indeterminate, NEG = negative.</p

Demographic, risk, and initial test characteristics of 172 persons with reactive rapid HIV test result and negative or indeterminate confirmatory test and proportion without a repeat confirmatory test; 17 health departments, 11 August 2004 to 31 December 2005.^a

<p>aOR, adjusted odds ratio; CI, confidence interval.</p>*<p>Statistically significant</p>a<p>adjusted for initial confirmatory test result</p>b<p>adjusted for sexual behavior</p

Test results for 12 persons with reactive rapid test results classified as HIV-uninfected but who had an indeterminate WB at the last repeat confirmatory test, 17 health departments, 11 August 2004 to 31 December 2005.

<p>EIA = enzyme immunoassay, WB = Western blot, Neg = Negative, ND = Not done *Bands interpreted as equivocal</p><p>[ ] results reported by CDC lab where Genetic Systems HIV1/HIV2 Plus O and Genetic Systems HIV-1 Western blot were used unless otherwise noted</p>a<p>Vironostika HIV-1 Microelisa System, bioMerieux</p>b<p>Fluorognost Sanochemia IFA</p>c<p>Roche Cobas Amplicor HIV-1 Monitor Assay (ultra-sensitive to 50 copies/ml)</p>d<p>Gen-Probe Procleix HIV-1 RNA Assay</p>e<p>Bio-Rad HIV-1/HIV-2 plus O</p>f<p>Genetic Systems HIV-1 Western blot</p>g<p>Abbott HIVAB HIV-1/HIV-2 (rDNA) EIA</p>h<p>Cambridge Biotech HIV-1 Western blot</p>i<p>OraSure HIV-1 Western blot</p