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immunology
Rheumatoid Factor
RF· also: Rheumatoid Factor
Clinical Overview
Rheumatoid Factor is an antibody found in rheumatoid arthritis and other autoimmune conditions. A positive RF combined with joint symptoms supports the diagnosis of RA.
Reference RangesWHO/IFCC standards
| Reference Range | Unit | Notes |
|---|---|---|
| 0 – 14 | IU/mL | Negative <14 |
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Related Topics
rheumatoid arthritisautoimmunejoints