When Clinicians Should Repeat RT-PCR for SARS-CoV-2: Repeat PCR Testing in Patients with Pulmonary CT Findings Suggestive of COVID-19

Real-time reverse transcription polymerase chain reaction (RT-PCR) tests for severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) are occasionally repeated when clinicians suspect false-negative results, but the conditions under which repeated RT-PCR testing is warranted remain unclear. We evaluated the practice of repeat RT-PCR testing for SARS-CoV-2 in 45 patients who were retested after an initial negative PCR test. Of these, the...