Rheumatoid Factor

Question  I have sero-negative rheumatoid arthritis. It has been almost two years now since it all started. I have not had my RF checked in nine months. I know that it might not ever be positive. How long should I get my rheumatoid factor checked? When will it,if it does, turn positive?
 
Answer  Most patients who develop a positive RF, develop it within 1 year after the onset of symptoms.

Last update: 12:33 PM Thursday, April 26, 2007

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