Elevated RF is found in collagen vascular diseases such as SLE, rheumatoid arthritis, scleroderma, Sjogren's syndrome, and in other conditions such as leprosy, tuberculosis, syphilis, malignancy, thyroid disease and in a significant percentage of otherwise normal elderly patients.
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- Fasting Required: NO
- Preferred Specimen: Serum
- Reference Range(s): See Laboratory Report
- Turnaround Time: 3 Days
- Test Code: 4418