
Rheumatoid Factor Levels: Normal <20, High >60 & What It Means
Understand rheumatoid factor levels: what's normal (<20 IU/mL), what's high (>60), and what your RF test results mean for rheumatoid arthritis diagnosis. Doctor-reviewed guide.

Understand rheumatoid factor levels: what's normal (<20 IU/mL), what's high (>60), and what your RF test results mean for rheumatoid arthritis diagnosis. Doctor-reviewed guide.