Antibody tests for Covid-19 wrong half the time, CDC says

Antibody tests for Covid-19 wrong half the time, CDC says
Antibody tests used to determine if people have been infected in the past with Covid-19 might be wrong up to half the time, the US Centers for Disease Control and Prevention said in new guidance posted on its website.

Source: Antibody tests for Covid-19 wrong half the time, CDC says How Insurance Companies Work?