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 Can I order multiple kits at one time? Do these tests detect the presence of COVID-19 variants? Who is eligible to obtain the COVID-19 testing? How long does it take to get Pixel by Labcorp® COVID-19 or Pixel by Labcorp® COVID-19 + Flu test results back? How does the Pixel by Labcorp® COVID-19 process work?