FDA approves use of Ortho's high-throughput, automated COVID-19 antibody test

Test can identify IgG and IgM antibodies (ABs). IgM typically shows up early in immune response, but levels quickly drop; IgG increase more slowly after infection, but generally last longer. In some cases, it can take 10-11 days for immune system to attack virus and produce ABs

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Biospace Inc.