Evaluation of a new combined antigen and antibody human immunodeficiency virus screening assay, VIDAS HIV DUO Ultra.

Journal of Clinical Microbiology
B WeberHans Wilhelm Doerr

Abstract

Combined antigen and antibody screening (fourth-generation) assays reduce the diagnostic window period between the time of human immunodeficiency virus (HIV) infection and laboratory diagnosis by 4 days, on average, in comparison to antibody-only (third generation) enzyme immunoassays (EIAs). The aim of the present study was to assess whether the new VIDAS HIV DUO Ultra (Biomérieux, Marcy-l'Etoile, France) showed an improved sensitivity and specificity in comparison to licensed fourth-generation assays. A total of 16 seroconversion panels, 15 cell culture supernatants infected with different HIV type 1 (HIV-1) subtypes, and 257 potentially cross-reactive serum samples were tested with VIDAS DUO HIV Ultra, Genscreen Plus HIV Ag-Ab, Enzygnost HIV Integral, Enzymun-Test HIV Combi, Genscreen HIV 1/2, version 2 (third-generation EIA), and Genetic Systems HIV-1 Ag EIA (p24 antigen assay). VIDAS HIV DUO Ultra showed a comparable sensitivity to the single p24 antigen assay in seroconversion panels and a dilution series of virus lysates. The diagnostic window was reduced with VIDAS HIV DUO Ultra by 3.82 days, on average, in comparison with the fourth-generation assay with the lowest sensitivity of the antigen detection module. HIV-1 inf...Continue Reading

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Citations

Oct 24, 2012·European Journal of Clinical Microbiology & Infectious Diseases : Official Publication of the European Society of Clinical Microbiology·A N FanmiP André
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