Causes of positive Rheumatoid Factor

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A higher level of rheumatoid factor in your blood is closely associated with autoimmune disease, particularly rheumatoid arthritis. But a number of other diseases and conditions can raise rheumatoid factor levels, including:

  • Cancer
  • Chronic infections
  • Inflammatory lung diseases, such as sarcoidosis
  • Mixed connective tissue disease
  • Sjogren's syndrome
  • Systemic lupus erythematosus

https://www.mayoclinic.org/tests-procedures/rheumatoid-factor/about/pac-20384800

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  • 14 days ago by vince