Using a nasal swab to get sample fluid, antigen tests can produce results in minutes. Because these tests are faster and less expensive than molecular tests are, experts consider antigen tests more practical to use for large numbers of people. Since the antigen test can be high specificity, a positive antigen test result is considered very accurate. Kit contents: (20) Rapid SARS-CoV-2 Antigen Test Cards (individually packages); (2) Sample Buffer Bottles; (20) Sterilized nasopharyngeal swabs (individually packaged); (20) Extraction tubes (individually packaged); (1) instruction for use; (1) tube rack (for 6 tubes/rack).