How accurate are these tests? November 22, 2021 13:00 Updated Labcorp is committed to scientific excellence. You can read about the performance of these tests 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 or COVID-19 + Flu test results back? Can I purchase a kit for travel? Who is eligible to obtain the COVID-19 testing? Do these tests detect the presence of COVID-19 variants? Can I order multiple kits at one time?