Introduction What is rheumatoid factor? What is the rheumatoid factor test for? Normal Levels What are the normal ranges for rheumatoid factor? High Levels What do high rheumatoid levels mean? The rheumatoid factor blood test helps to diagnose rheumatoid arthritis.Rheumatoid factor is an antibody that is detectable in the blood of approximately 80% of adults with rheumatoid arthritis.Rheumatoid factor test is used by health care professionals to help in diagnosing rheumatoid arthritis.Sometimes rheumatoid factor can be detected in the blood of normal individuals and of those with other autoimmune diseases that are not rheumatoid arthritis.In people with rheumatoid arthritis, high levels of rheumatoid factor can indicate a tendency toward more aggressive disease and/or a tendency to develop rheumatoid nodules and/or rheumatoid lung disease. What is rheumatoid factor?Rheumatoid factor is an antibody that is measurable in the blood with a routine blood test. Rheumatoid factor is actually...
