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Antibody tests were only widely available in July-August, so people who got COVID in Feb or March often didn't have high enough antibody counts by that point t
by bpodgursky 5y ago
Antibody tests were only widely available in July-August, so people who got COVID in Feb or March often didn't have high enough antibody counts by that point to flag positive on the tests.
- crazygringo 5y agoThat's not true. The half-life of antibody levels has been estimated at 73 days. The antibody tests are quite sensitive, time has not been enough of a factor yet to produce false negatives. In a year or two it might be. The only time concern is that you need to wait 2-3 weeks until after you recover from COVID to ensure you test positive.