Laboratory Corp. of America Holdings gained U.S. authorization for the first home-testing kit for COVID-19. Patients will collect samples from their noses and send them to LabCorp for testing, the Food and Drug Administration said in a statement Tuesday.

The kits are expected to be available in most states with a doctor’s order in the coming weeks, according to the FDA. The agency said it worked with LabCorp to ensure the tests are as accurate as those done in a doctor’s office or hospital.