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Home > Health Library > Antibody Test for COVID-19
An antibody test looks for antibodies in the blood. These are proteins that your immune system makes, usually after you're exposed to germs like viruses or bacteria or after you get a vaccine. Antibodies work to fight illness.
A COVID-19 antibody test looks for antibodies to SARS-CoV-2, the virus that causes COVID-19. If you test positive for these antibodies, it could mean that you already had COVID-19.
This test can be used to diagnose a past infection with the virus that causes COVID-19. Many people who get COVID-19 never have symptoms or have only mild ones. Without antibody testing, these people might never know that they already had the virus.
Antibody testing is important because:
This is a blood test. A health professional may prick your finger or use a needle to take a sample of blood from your arm.
Current as of:
June 18, 2020
Author: Healthwise StaffMedical Review: Heather Quinn MD - Family MedicineLesley Ryan MD - Family Medicine
Current as of: June 18, 2020
Author: Healthwise Staff
Medical Review:Heather Quinn MD - Family Medicine & Lesley Ryan MD - Family Medicine
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