Types of SARS-COV-2 Tests
Antigen Tests - Antigen tests are immunoassays that detect the presence of a specific viral antigen. Most can be processed at the point of care with results available in minutes and thus can be used in screening programs to quickly identify those who are likely to be contagious.
PCR Tests (Polymerase Chain Reaction) - PCR tests detect one or more viral ribonucleic acid (RNA) genes and indicate a current infection or a recent infection but, due to prolonged viral RNA detection, are not always direct evidence for the presence of virus capable of replicating or of being transmitted to others. Most PCR tests need to be processed in a laboratory and time to results can vary (~1–3 days). PCR tests can be performed via saliva or blood samples.