Also known as: RF
Formal name: Rheumatoid Factor
Related tests: ANA, Autoantibodies, CCP (Cyclic Citrullinated Peptide Antibody), ESR, CRP, ENA panel, Synovial Fluid Analysis
Why should I do it?
To help diagnose rheumatoid arthritis (RA) and Sjögren syndrome
When should I do it?
When you have fatigue, joint pain, weakness, or dry eyes or dry mouth that your doctor suspects may be due to RA or Sjögren syndrome
What Kind of Sample is Needed?
A blood sample drawn from a vein in your arm
Test Preparation Needed?