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A member asked:
Can you tell me how is rheumatoid factor produced?
A doctor has provided 1 answer
RF!: Rheumatoid factor is present in 5% of the population, while only about 1% have rheumatoid arthritis. Rheumatoid factor is usually an igm moiety directed against the "tail" of igg! any chronic immune stimulation, including infection, can cause a positive rf!
Answered 3/3/2014
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