Antibody Test, Seen as Key to Reopening Country, Does Not Yet Deliver

https://www.nytimes.com/2020/04/19/us/coronavirus-antibody-tests.html?action=click&module=Spotlight&pgtype=Homepage

 The tests, many made in China without F.D.A. approval, are often inaccurate. Some doctors are misusing them. The rollout is nowhere close to the demand.

The Food and Drug Administration has allowed about 90 companies, many based in China, to sell tests that have not gotten government vetting, saying the pandemic warrants an urgent response. But the agency has since warned that some of those businesses are making false claims about their products; health officials, like their counterparts overseas, have found others deeply flawed.