Antibody testingCoronavirus antibody testing may not be as reliable as we thought. The CDC now says tests used to determine if people have been infected in the past with Covid-19 might be wrong up to half the time. This can be especially dangerous if the test results in a false positive, leading people to believe they have been infected in the past and may be immune (it's still not clear whether a past infection means someone can't get the virus again). Regardless, the CDC says the antibody tests aren't accurate enough to use to make important policy decisions, like figuring out when people should return to work. Health officials or providers using antibody tests need to use the most accurate ones they can find and might need to test people twice, the CDC says.

Source: Daily Sun May 27, 2020 10:07 UTC