Coronavirus (COVID-19) testing: What you should know
Updated Oct. 20, 2021
COVID-19 tests are conducted in commercial, private and academic labs, as well as state and county health labs, and are also available for at-home use. UC Davis Health has greatly expanded our on-site testing capabilities, having developed and validated our own accurate COVID-19 test.
The most accurate COVID-19 test, a molecular PCR test, involves inserting a 6-inch long swab (like a long Q-tip) into the cavity between the nose and mouth (nasopharyngeal swab) for 15 seconds and rotating it several times. The swabbing is then repeated on the other side of the nose to make sure enough material is collected. The swab is then inserted into a container and sent to a lab for testing.