Utility of Stool PCR for the Diagnosis of COVID-19: Comparison of Two Commercial Platforms.
JOURNAL OF CLINICAL MICROBIOLOGY(2020)
Abstract
The ability to detect SARS-CoV-2 in the upper respiratory tract ceases after 2 to 3 weeks post-symptom-onset in most patients. In contrast, SARS-CoV-2 can be detected in the stool of some patients for greater than 4 weeks, suggesting that stool may hold utility as an additional source for diagnosis. We validated the Cepheid Xpert Xpress SARS-CoV-2 and Hologic Panther Fusion real-time RT-PCR assays for detection of viral RNA in stool specimens and compared performance. We utilized remnant stool specimens ( n = 79) from 77 patients with gastrointestinal symptoms.
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Key words
saliva testing
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