The rheumatoid arthritis severity scale (RASS) was developed to help doctors assess disease activity, functional impairment, and physical damage caused by RA. Newer methods are now more commonly used.
What Is the Rheumatoid Factor Test? A rheumatoid factor test, or RF test, is a blood test to look for rheumatoid factors in your blood. High levels of rheumatoid factor can show up in people with ...
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