Antibody blood tests, also called antibody tests, check your blood by looking for antibodies, which show if you had a previous infection with the virus.
Depending on when someone was infected and the timing of the test, the test may not find antibodies in someone with a current COVID-19 infection.
Antibodies are proteins that help fight off infections. Antibody tests should not be used as the only way to diagnose someone as being currently sick with COVID-19.
Antibody tests are slowly becoming available through healthcare providers. A guide to help you make decisions and seek appropriate medical care Check with your healthcare provider to see if they offer antibody tests.