How accurate is this test? July 29, 2021 13:02 Updated Labcorp is committed to scientific excellence. You can read about the performance of this test in our FDA Emergency Use Authorization Summary. Other studies have also examined the performance of self-collected nasal swabs. Related articles How long does it take to get COVID-19 test results back? What is a false negative result? How long is my sample stable for testing? When will I receive my kit? What is the price of the COVID-19 test?