Doctors may order a cyclic citrullinated peptide (CCP) antibody test and other exams to confirm or rule out a rheumatoid arthritis (RA) diagnosis. A positive CCP antibody test doesn’t necessarily mean ...

A thyroglobulin antibody (TgAb) test looks for certain antibodies that attack the thyroid. The presence of TbAb in high levels may indicate that someone has an autoimmune condition. To conduct a TgAb ...

Thyroid antibodies are cells the immune system forms in response to thyroid cells. They develop when the immune system mistakenly attacks thyroid cells and tissues. High levels can indicate an ...

At-home celiac tests come in two main types: antibody tests that i.d. certain proteins present in the blood of people with celiac disease, and genetic tests that detect certain variants. For accurate ...

The herpes simplex virus (HSV) antibodies test is a type of herpes simplex test that determines whether or not you’ve ever been exposed to this virus. Specifically, it’s a blood test that looks for ...