RF factor is used to diagnose which type of disease?
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Myeloma
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Rheumatic arthritis
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Myalgia
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Multiple sclerosis
B
Correct answer
Explanation
RF (Rheumatoid Factor) is primarily used to diagnose rheumatoid arthritis, an autoimmune joint disease. Myeloma is diagnosed through different tests like electrophoresis. Myalgia refers to muscle pain and multiple sclerosis uses different diagnostic markers.