Mashable: Could your COVID-19 test be wrong?
Mashable: Could your COVID-19 test be wrong? . “No test, whether for COVID-19 or another infection or medical condition, is perfect, and false results are always possible. But the accuracy of COVID-19 tests has improved since the virus first emerged, and scientists also now have data showing that the most effective tests, like PCR and other molecular tests, are often correct. If you have reason to suspect a false result, it may make sense to confirm your results with another test. But for the most effective tests, false positive results may be particularly rare. False negatives are also relatively uncommon with these tests, especially if you have symptoms. Still, a number of individual factors affect accuracy, including what type of test you take, whether you have symptoms, and more.”