
COVID-19 Test
A COVID-19 test is a process to detect if someone is currently infected with the coronavirus that causes COVID-19. There are two main types: diagnostic tests (like PCR and rapid antigen tests) that identify active infection, and antibody tests that show past exposure by detecting immune response. Diagnostic tests usually involve collecting a nasal or throat swab, which is then analyzed in a lab or with a rapid test device. Results help determine if a person needs to isolate, seek treatment, or inform contact tracing efforts to prevent further spread.