Rheumatoid Factor (RF) Test: Price, Purpose, & Range
Rheumatoid factor (RF) is an autoantibody produced by the body’s immune system that targets one’s own tissues instead of foreign substances. The RF blood test measures the level of rheumatoid factor in the blood. The presence of this antibody can indicate the presence of an autoimmune disorder, such as rheumatoid arthritis (RA), but it can […]
