Abstract
To meet the testing demands and overcome supply chain issues during the SARS-CoV-2 pandemic, many clinical laboratories validated multiple SARS-CoV-2 molecular testing platforms. Here, we compare three different molecular assays for SARS-CoV-2 that received emergency use authorization (EUA) from the U.S. Food and Drug Administration. In order to determine the agreement among Roche cobas® SARS-CoV-2 Test (Cobas), Abbott RealTime SARS-CoV-2 assay (ART), and Mayo Clinic Laboratory SARS-CoV-2 Molecular Detection Assay (Mayo LDT), 100 each of anterior nares (AN), nasopharyngeal (NP), oropharyngeal (OP), and NP+OP swabs were tested on each platform. The consensus result was defined as agreement by 2 or more methods. Furthermore, 30 positive NP swabs from each molecular platform (n = 90 total) were tested on the three platforms to determine the PPA among positive samples. ART platform called more specimens positive than the other two platforms. All three assays performed with greater than 90% agreement for NP specimens throughout the study.
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