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.
Rheumatoid Arthritis (RA) Factor
No fasting required.
Estimated turnaround for results is 3 business days. If confirmation testing is required, the estimated time may be extended.