Rheumatoid factor 50IU/ml is normal?

Rheumatoid factor 50IU/ml is higher than the normal range, which is abnormal.

The normal value of rheumatoid factor is 0~ 20.0 IU/ml, and 50IU/ml has exceeded the normal range, which is abnormal. Although rheumatoid factor elevation is common in patients with rheumatoid arthritis, it is not a specific indicator. Other autoimmune diseases may also cause it to increase.

Rheumatoid arthritis is a common autoimmune disease. In addition to joint symptoms, there may be systemic manifestations. However, rheumatoid factor 50IU/ml alone cannot be diagnosed as rheumatoid arthritis. It needs to be combined with clinical symptoms such as joint pain, swelling, stiffness, especially symmetrical multi-joint involvement, and other tests such as anti-cyclic citrulline antibodies and imaging examinations.