A COVID-19 antibody test can confirm if you have been previously infected with the coronavirus. Learn why it is used and what it can and cannot tell you.

Despite having similar viral loads and symptoms to their adult counterparts, children in a small Australian study were far less likely to have antibodies against COVID-19.

A new study found that a COVID-19 vaccine booster shot can increase antibodies in solid organ transplant recipients.

Sjogren’s antibodies include anti-SS-A/anti-Ro and anti-SS-B/anti-La. They can be present in Sjogren’s syndrome and other autoimmune disorders.

Experts say antibodies are only part of the immune defense trained by natural immunity from COVID-19 infection or the vaccine.

A preliminary study found that a urine-based antibody test detects antibodies against SARS-CoV-2 as well as a blood test.

Learn more about the CCP antibody test, including its uses, side effects, procedure, and results.

There’s been a lot of talk about antigens vs. antibodies lately, but what are they? Learn about their differences and how they relate to COVID-19.

Researchers have created a COVID antibody test that uses the enzyme that makes fireflies glow to indicate how protected a person is against the virus.

Syphilis antibodies are substances in the blood of anyone who has come in contact with syphilis bacteria. Certain antibody tests can detect the infection.