What is an antibody test?

An antibody test, also known as serology testing, checks a sample of a person’s blood for the presence of antibodies. Antibodies are specific proteins that our body makes to help fight off infections, which means this test can determine if an individual had a previous infection with the COVID-19 virus. At this time, a positive result cannot determine if the individual is currently infected, contagious to others or protected against the virus in the future.

This test can be performed through healthcare providers and laboratories. Speak with your medical provider to see if they offer antibody tests.

Show All Answers

1. How is COVID-19 diagnosed?
2. What is a viral test, and what do the results tell you)?
3. What is an antibody test?
4. What do the results from an antibody test mean?
5. What are the limitations of antibody testing?
6. Are test materials available in St. Charles County, and how may they be obtained?
7. How does St. Charles County utilize test results? Can an antibody test affect the quarantine period for an individual?
8. How is COVID-19 treated?
9. Should I take chloroquine phosphate, hydroxychloroquine or other medicines to prevent or treat COVID-19?
10. My question was not listed among these FAQs. Where can I go for additional information?