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  • Title: Performance evaluation of the ADVIA Centaur(®) HIV Ag/Ab Combo assay.
    Author: Pumarola T, Freeman J, Saxton E, Dillon P, Bal T, van Helden J.
    Journal: J Virol Methods; 2010 Dec; 170(1-2):16-20. PubMed ID: 20723562.
    Abstract:
    Early diagnosis of HIV infection and appropriate care reduces morbidity and mortality. As a result, recent guidelines recommend that HIV screening be routinely included in patient care. Routine screening will likely result in more patients being tested prior to seroconversion; fourth-generation assays can facilitate diagnosis in these patients. This study evaluated the performance of the automated fourth-generation ADVIA Centaur(®) HIV Ag/Ab Combo assay. Samples from three sites were tested using the HIV Ag/Ab Combo assay and a CE-marked predicate assay. The HIV Ag/Ab Combo assay's relative sensitivity was 98.36% (599/609; 95% confidence interval: 97.00-99.21%), and the relative specificity was 99.74% (7743/7763; 95% confidence interval: 99.60-99.84%). The HIV Ag/Ab Combo assay detected seroconversion at the same bleed or at least one bleed earlier in 34/37 panels compared to the CE-marked predicate assay. Compared to the final result, the HIV Ag/Ab Combo assay's sensitivity was 100% (598/598; 95% confidence interval: 99.39-100.00%), and the specificity was 99.74% (7753/7773; 95% confidence interval: 99.60-99.84%). Sensitivity was 100% for the HIV genotypes tested. The HIV Ag/Ab Combo assay is a sensitive and specific assay that can assist clinicians in the early diagnosis of HIV infection.
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