Rheumatoid Factor (RF)
Also Known As: Rheumatoid Factor (RF)
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About the Test
Description:
Human IgM autoantibody that is increased in autoimmune diseases like rheumatoid arthritis
Clinical Significance:
Human IgM autoantibody is increased in autoimmune diseases like rheumatoid arthritis
More about Tests
Learn more about laboratory testing
Target Levels (where applicable)
REFERENCE INTERVALS FOR ADULTS: < 40 IU/ml
What is being checked
INCREASE IN: Rheumatoid arthritis, Sjögren syndrome, scleroderma, systemic lupus erythematosus (lupus), sarcoidosis, endocarditis, tuberculosis, syphilis
DECREASE IN: NA.