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Of participants with a prior positive Polymerase Chain Reaction (PCR) test (n=1,828), 29.1% were seropositive in the POCT.
The prevalence of SARS-CoV-2 antibodies was determined by Point-of Care rapid Test (POCT) distributed to participants home addresses.
Probably not. Rapid antibody testing can be problematic. Home testing in particular.
So peoples PCR tests was 71% false positives?!!?
As participants performed the POCT at home, incorrect testing procedure or misinterpreted POCT results could lead to false negative POCT results. Importantly, inconclusive tests were treated as negative in our study, and weak lines suggesting a positive test result, could be misinterpreted as a negative test result. In other Danish studies, the tests (POCT and ELISA) have been performed and read or analyzed by professional staff which increases the performance of the test. Consequently, the seroprevalence is likely underestimated in our study.