COVID finger prick, rapid antigen test, or rapid test, is a rapid diagnostic test suitable for point-of-care testing that directly detects the presence or absence of an antigen. It is commonly used for the detection of SARS-CoV-2, the virus that causes COVID-19. Rapid tests are a type of lateral flow tests that detect protein, distinguishing it from other medical tests that detect antibodies or nucleic acid, of either laboratory or point-of-care types. Rapid tests generally give a result in 1 to 15 minutes, require minimal training or infrastructure, and have significant cost advantages. NO Lab Required for results.