New guidelines say coronavirus antibody tests are pointless

New Infectious Disease Society of America guidelines say coronavirus antibody tests are pointless. Serological tests might not be able to confirm a prior COVID-19 infection if the illness occurred more than a few months ago. The society identified three scenarios where antibody tests can be useful, but even then, they'd have to be high-quality tests that correctly determine the presence or absence of antibodies. Most commercial tests might not meet IDSA's recommendations. You've heard about them...