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 ...

The body has an intricate system to defend against infections where each type of immune cell plays a distinct role. Now, a study led by researchers from the Penn State College of Medicine has ...

HERSHEY, Pa. — The body has an intricate system to defend against infections where each type of immune cell plays a distinct role. Now, a study led by researchers from the Penn State College of ...

A TPO antibody test helps diagnose autoimmune thyroid diseases like Hashimoto’s thyroiditis. A positive test result means antibodies are present and may indicate a thyroid condition, but other tests ...