Test Swab Navy Lt. Jessica Colston, the team lead at the Naval Health Clinic Cherry Point Respiratory Clinic, left, gives a patient a nasopharyngeal swab at Marine Corps Air Station Cherry Point, N.C., Aug. 18, 2020. Nasopharyngeal swabs are used to test for COVID-19 by collecting samples from the cavity between nose and mouth. SHARE: Download: Full Size (1.01 MB) Credit: Marine Corps Lance Cpl. Michael Neuenhoff VIRIN: 200903-M-CJ305-1411M.JPG Photo Gallery