Rheumatoid Factor
Rheumatoid factor is an autoantibody often found in rheumatoid arthritis and some other conditions.
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Normal ranges
Adults: up to 14 IU/mL.
Units: IU/mL
Causes of deviations
Low levels:
Usually has no meaning.
High levels:
Rheumatoid arthritis, chronic infections, autoimmune disease.
When to see a doctor
If it is raised, discuss it with your doctor.
Related biomarkers
Conditions
Rheumatoid arthritis
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