A PCR test (polymerase chain reaction test) is a medical test that detects genetic material from a specific organism. The test is commonly used to diagnose infectious diseases such as COVID-19. For example, if you are planning a cruise, you may need to take a PCR test to ensure you are not carrying the virus.
PCR tests are highly sensitive and specific, which makes them useful for diagnosing infectious diseases. The tests can also be used to detect genetic mutations, such as those that can lead to cancer. The development of PCR technology has revolutionized the field of molecular biology and has made it possible to diagnose and treat diseases in ways that were not previously possible.