The U.S. Food and Drug Administration has authorized the first test for coronavirus that measures antibodies in the blood. Such tests could identify people who have recovered from COVID-19, a key for knowing who’s immune and for developing a vaccine.
Cellex Inc. of Research Triangle Park, North Carolina, received an emergency use authorization for its test Thursday from the FDA.It uses blood drawn from a vein to measure antibodies to the SARS-CoV-2 virus that causes COVID-19.
It is the first of an expected flood of such tests as companies race to develop them. Antibody tests are already being used in several countries, including China, South Korea and Singapore.
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