There are many types of tests for COVID-19. The two main types are a viral test and an antibody test. The viral test tells you if you have the virus. The antibody test tells you if you had a past or current infection. Antibodies are small proteins that your immune cells make. They bind to markers called antigens that are on germs or foreign objects.
The main kind of test is the nasal swab PCR test. This test involves swabbing a sample of the back inside of your nostrils. The PCR machine makes hundreds of thousands of copies of the DNA in the sample. The tester then checks the sample for viral DNA.
Other tests involve testing for a COVID antigen. In this test, the patient places a sample of blood onto a trip of paper that has antibodies. If the antibodies bind to the antigen, the paper strip changes colors. This color change means the sample is positive for the antigen. Antibody tests use a blood sample to see if there are antibodies to the virus. Quick testing uses a test strip to check for a color change. Many other tests involve blood or other fluids. Positive results will show a color change.
PCR tests are the most accurate and effective, but take a lot of time. Antigen and antibody tests are much faster and are almost as accurate. You should get the test that is the best fit for you. It is important that you get the test if you feel you have COVID symptoms or were exposed to someone with COVID.
-APPE Student Class of 2021