Promising a new 15-minute test for coronavirus comes with caveats.
But is this test the holy grail?
“It is not very sensitive for detecting the virus in patient specimens," Pritt said. “A sensitivity of 60% means that only 6 out of every 10 cases of COVID-19 will be detected by this test, and 4 will be missed.”Faix noted that these type of tests “usually have pretty good specificity,” meaning they are unlikely to show a false positive. “But they suffer from generally poor sensitivity -- not identifying most of the people with the disease.
“It’s possible that larger studies may show better performance,” he said. “Also, other companies are developing similar assays with different ways of detecting the 'color.' These may enhance the sensitivity of the approach.” A technician prepares COVID-19 coronavirus patient samples for testing at a laboratory in Long Island, New York, March 11, 2020.“While I think that this rapid antigen test may have some role in detecting the coronavirus causing COVID-19, the low sensitivity severely limits the utility of this method," said Pritt."Physicians could use a positive result as evidence that a patient has COVID-19, but they couldn’t use a negative result to rule out the possibility of infection.
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