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Rheumatoid FactorIU/mL
Rheumatoid factor is an antibody that is commonly measured when joint inflammation is being evaluated.
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What Rheumatoid Factor measures
Rheumatoid factor is an antibody that is commonly measured when joint inflammation is being evaluated.
If your Rheumatoid Factor is low
Low is the expected state.
If your Rheumatoid Factor is high
Rheumatoid factor above the range is commonly associated with rheumatoid arthritis, but also appears with other immune conditions, infections and with age.
Commonly associated with
- Rheumatoid arthritis
- Other autoimmune conditions
- Chronic infections
- Age
Typical reference range
| Group | Typical range |
|---|---|
| Adults | 0 – 14 IU/mL |
Typical adult values used by many US labs. Your own report prints the range your lab validated for its method, and that range is the one that counts. Labwise always uses the printed range first.
If it is within range
Your rheumatoid factor is within the range printed by your lab.
Also listed as
RF, RA Latex Turbid., Rheumatoid Factor, Quant
Related tests
This page is general information about what a laboratory test measures and what results outside a reference range are commonly associated with. It is not medical advice, does not diagnose any condition and does not replace your clinician. Discuss your results with your healthcare provider.