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serum immunoglobulin M-type rheumatoid factor level (CMO:0002609)
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Parent Terms Term With Siblings Child Terms
serum anti-rat type 2 collagen autoantibody level +   
serum autoantibody titer +   
serum immunoglobulin G-type rheumatoid factor level +   
serum immunoglobulin M-type rheumatoid factor level +   
The amount in a specified sample of serum of rheumatoid factor that is expressed as an immunoglobulin M (IgM) molecule. Rheumatoid factor (RF) is an autoantibody against the Fc portion of IgG found in rheumatoid arthritis and some other autoimmune diseases. RF and IgG join to form immune complexes that contribute to the disease process.

Related Synonyms: serum IgM-RF level ;   serum IgM-rheumatoid factor level
Definition Sources: American_Heritage:The_American_Heritage_Medical_Dictionary_2007, "Wikipedia" "Wikipedia"

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