More than 90 antibody tests are now on the market but they “may not be as accurate as we’d like,” says FDA chief Stephen Hahn. And health experts are warning that just because a person has antibodies to the coronavirus doesn’t mean they are immune to it
Blood tests that measure a person’s antibodies to the coronavirus could be a powerful tool to determine when it’s safe to reopen the country.
That data can help public health experts better understand how many people have been infected and adjust their models of the U.S. outbreak, said Kelly Wroblewski, the Association of Public Health Laboratories’ director of infectious diseases. The FDA said in March that it would allow companies to develop and distribute validated antibody tests without review under certain circumstances — including that test-makers notify the agency and include disclaimers in test results.
The National Institutes of Health, Centers for Disease Control and Prevention and the FDA are each working to assess the accuracy of antibody tests that haven’t yet undergone FDA review. Once the logistics of administering tests are resolved, frontline health care workers should have priority, said former acting CMS Administrator Andy Slavitt. That can help workers who suspect they’ve been exposed to the virus return to work if they have antibodies.
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