When persistent joint pain strikes, the search for answers often leads to a crucial diagnostic tool: the rheumatoid factor test. This relatively quick blood analysis serves as a window into the immune ...

A rheumatoid factor test measures the amount of rheumatoid factor in your blood. Rheumatoid factors are proteins produced by your immune system that can attack healthy tissue in your body. High levels ...

September 7, 2012 — Elevated rheumatoid factor (RF) levels in healthy patients may be a strong predictor of future rheumatoid arthritis (RA), according to data from a prospective cohort study ...

Antibodies to peptides not currently used for rheumatoid arthritis (RA) diagnosis helped identify patients with untreated early disease that conventional biomarkers missed, researchers said. Almost ...

Although there are more than 100 conditions that fall under the umbrella term "arthritis," an autoimmune disease called rheumatoid arthritis is one of the more common. According to the Arthritis ...

Rheumatoid arthritis is an autoimmune disease which occurs when the immune system creates an unwanted response that targets the body's tissues and organs. Normally, a healthy immune system counts on ...

Diagnosis of early-stage rheumatoid arthritis (RA) can be difficult, because many of the characteristic features of RA that existing diagnostic tools depend on do not develop until the late stages of ...