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Evaluation of the performance of a rapid antigen test (Roche) for COVID‐19 diagnosis in an emergency setting in Sweden

During the ongoing COVID-19 pandemic, rapid and reliable detection of SARS-CoV-2 is important to enable proper care of patients and to prevent further transmission. The aim of this study was to evaluate the performance of the Roche SARS-CoV-2 Rapid Antigen Test (Ag-RDT) in an emergency care setting during a high pandemic period. The analytical performance of the Ag-RDT was compared to real-time reverse transcriptase polymerase chain reaction (rRT-PCR). A total of 132 patient samples, previously analyzed with rRT-PCR, were reanalyzed with the Ag-RDT. Tenfold serial dilutions of five different patient strains containing the pangolin variants BA.1, BA.2, B.1.1.7, B.1.160, and B.1.177 were analyzed in parallel with the Ag-RDT and rRT-PCR. A clinical evaluation was performed in which 1911 consecutive patients …

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