CDC Says Don’t Rely on Antibody Tests for Reopening Schools and Businesses The tests, also known as serologic tests, have been producing inconsistent and inaccurate results.
CDC, via guidance Since “overall prevalence of antibodies in most populations is likely low,” the tests could produce false positives “less than half” of the time.
The agency has warned those who have tested positive for the antibodies not to assume that they are protected from COVID-19.
The CDC’s guidance follows an American Medical Association report saying tests should not be used in "determining immune status."
