Description: Elevated RF is found in collagen vascular diseases such as SLE, rheumatoid arthritis, scleroderma, Sjögren's Syndrome, and in other conditions such as leprosy, tuberculosis, syphilis, malignancy, thyroid disease and in a significant percentage of otherwise normal elderly patients.
Significant deviations from the normal range may require further evaluation by your physician.
Description: The Rheumatoid Arthritis blood test detects the level of the Rheumatoid Factor (RF) antibody present in persons with rheumatoid arthritis. A high level of RF may be caused by rheumatoid arthritis, acute infections, or other autoimmune diseases. A significant deviation from the normal range may require further evaluation by your physician.