There are 4 basic tests currently approved by the FDA for the detection of the Covid-19 virus:
Rapid antigen test: detects particles of the Covid-19 virus and is most effective between days 3 and 10 following exposure to the virus. Results are available within 20 minutes.
Rapid PCR test: detects a different particle of the Covid-19 virus and is most sensitive for active disease, typically turning positive within 5 days of exposure and active infection. Like the gold standard PCR test, this test can remain positive for up to 3 months after active infection. Results are available within 20 minutes of sample run. Testing supplies for this type of test are very limited across the country and therefore we follow strict CDC protocol to determine if this test should be completed.
Full standard PCR test: the “gold standard test” and by far the most sensitive and specific. This test also detects a different particle of the Covid-19 virus and is most sensitive for active disease, typically turning positive within 5 days of exposure and active infection. This test can remain positive for up to 3 or more months after active infection. Results are available within 24-48 hours of sample run.
Serum antibody test: this is a blood test which detects antibodies in the blood which develop after recovery from an active infection and are created by the immune system. This test is best used a minimum of 14 days after known or suspected infection. Test results are typically available within 24-48 hours of sample run. Antibody test can also be used to determine if your immune system has properly responded to the Covid-19 vaccine.