7/3/23, 11:55 PM Rheumatoid factor, positive Pathway Feedback Search Clinical Topics Home Findings Rheumatoid factor, positive Rheumatoid factor, positive More common causes Rheumatoid arthritis Infectious mononucleosis Less common causes Sarcoidosis Human immunodeficiency virus infection Sj gren's disease Sicca syndrome Multiple myeloma Waldenstr m's macroglobulinemia Mixed connective tissue disease Systemic lupus erythematosus Systemic sclerosis Infective endocarditis Polymyositis https://web.pathway.md/findings/rec6N4fYQnXJmZA8m 1/1