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BACKGROUND: No reports describe falsepositive reverse transcriptase polymerase chain reaction (RT‐PCR) for novel coronavirus in preoperative screening. METHODS: Preoperative patients had one or two nasopharyngeal swabs, depending on low or high risk of viral transmission. Positive tests were repeated. RESULTS: Forty‐three of 52 patients required two or more preoperative tests. Four (9.3%) had discrepant results (positive/negative). One of these left the coronavirus disease (COVID) unit against medical advice despite an orbital abscess, with unknown true disease status. The remaining 3 of 42 (7.1%) had negative repeat RT‐PCR. Although ultimately considered falsepositives, one was sent to a COVID unit postoperatively and two had urgent surgery delayed. Assuming negative repeat RT‐PCR, clear chest imaging, and lack of subsequent symptoms represent the “gold standard,” RT‐PCR specificity was 0.97. CONCLUSIONS: If false positives are suspected, we recommend computed tomography (CT) of the chest and repeat RT‐PCR. Validated serum immunoglobulin testing may ultimately prove useful.
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document_parses/pdf_json/297c09b3475ee45c6f6b1ebd557eca19193a98db.json
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document_parses/pmc_json/PMC7307014.xml.json
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False‐positive reverse transcriptase polymerase chain reaction screening for SARS‐CoV‐2 in the setting of urgent head and neck surgery and otolaryngologic emergencies during the pandemic: Clinical implications
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