Saliva COVID-19 Test as Good as, Perhaps Beats, Nasal Swab: Study

Source: Medscape

A COVID-19 saliva test protocol developed by researchers at Yale University appeared to perform at least as well as nasal swabs in a study of hospital patients, a finding that may help encourage more frequent use of self-collected samples, according to a Medscape report.

In a letter published August 28 in the New England Journal of Medicine, Anne L. Wyllie, PhD, of the Yale School of Public Health, New Haven, Connecticut, and her coauthors reported on testing done on 70 patients. These patients already had tested positive for COVID-19, which was confirmed with a positive nasopharyngeal swab specimen at admission to Yale-New Haven Hospital.

At 1 to 5 days after diagnosis, 81% (95% CI, 71-96) of the saliva samples were positive, as compared with 71% (95% CI, 67-94) of the nasopharyngeal swab specimens, Wyllie and coauthors report in the NEJM paper.

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