The RA Factor (Rheumatoid Factor) – Quantitative test measures the concentration of rheumatoid factor antibodies in the blood. Rheumatoid factor (RF) is an autoantibody that is often elevated in rheumatoid arthritis (RA) and other autoimmune diseases.
This quantitative test provides a specific numerical value for the amount of rheumatoid factor present, which can help assess the severity of rheumatoid arthritis, monitor disease progression, and evaluate the effectiveness of treatment. Elevated RF levels may indicate an active disease process, but they can also be seen in other conditions or even in healthy individuals. It is used in conjunction with other clinical tests and symptoms for a comprehensive diagnosis.