The newer tests use a shallow swab of the lower nose. They're less invasive, easier to perform, and more comfortable. These tests are already being used at CVS and Walmart sites.
From an online article:
"One new study of 30 volunteers was conducted by researchers at Stanford University in California. It found near-100% concordance between COVID-19 test results from patient-administered swab tests to the lower nasal passage and the more onerous nurse-delivered test much farther up the nose.
Another study, conducted by UnitedHealth Group in Minnetonka, Minn., found that self-administered swab samples taken from the lower nasal passage delivered over 90% accuracy compared to standard tests that reached into the nasopharynx (where the nasal passages connect with the mouth).
Allowing patients to collect their own samples would cut down on infection risks for health care workers as well, noted Dr. Ethan Berke and colleagues, who conducted the Minnesota trial. They pointed out that nasopharyngeal swabs are so uncomfortable that patients often cough, sneeze or gag during the procedures -- upping the odds that infected droplets will be expelled."