This test measures levels of rheumatoid factor (RF) antibodies. Rheumatoid factor (RF) is an autoantibody that is produced by the body’s immune system and attacks the body’s own tissue.
The presence of this antibody is indicative of inflammatory and autoimmune activity. It is used to diagnose rheumatoid arthritis alongside ACPA (CCP-antibodies).
Read about the rheumatoid factor blood test.