Reviewed: 13. Juli 2026
RF Rheumatoid Factor (RF)
Unit: IU/ml
Quick Explanation
Rheumatoid factor is an antibody that often occurs with rheumatoid arthritis, but can also be positive with other diseases or even in healthy people. A positive value alone is not a diagnosis and must always be assessed together with symptoms and other findings.
📊 Reference Values
ℹ️ Reference ranges may vary slightly between laboratories. Always compare your value with the reference range from your own lab report.
🔍 Possible Causes
Value too high — possible causes
- ·Rheumatoid arthritis
- ·Other autoimmune diseases
- ·Chronic infections
- ·Can also be mildly elevated in healthy people
This list shows possible causes — not a diagnosis. Only your doctor can correctly interpret your result.
🩺 Questions for Your Doctor
- →Does this value confirm rheumatoid arthritis?
- →Should Anti-CCP also be measured?
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Medical Disclaimer
The content on this page is for general information only and does not replace professional medical advice, diagnosis, or treatment. Always consult your doctor or pharmacist for health-related questions. Lab values should always be assessed in the context of your personal medical history.