Multiple choice

RA factor is the test used to diagnose

  1. Hypertension

  2. Rheumatoid arthritis

  3. Diabetes mellitus

  4. Addison's disease
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Rheumatoid Factor (RF) is an autoantibody (IgM) directed against the Fc portion of IgG. Its presence is a key diagnostic marker for rheumatoid arthritis, an autoimmune disease causing joint inflammation. It is not used to diagnose hypertension, diabetes, or Addison's disease.

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