Congress is sounding the alarm after early data from researchers in California who "tested the tests" showed troublingly high rates of false results. One in 3 antibody tests they analyzed produced false positives more than 10 percent of the time.
-- Josh Lederman, NBC News
A test of 200 people just outside Boston found that 32% had been exposed to the coronavirus
Coronavirus antibody testing finds Bay Area infections may be 85 times higher than reported
1 in 5 New Yorkers May Have Had Covid-19, Antibody Tests Suggest
Antibody test study results suggest COVID-19 cases likely much higher than reported