Rheumatoid Factor
Laboratory Tests
estimated about CNY 50-200
(estimated about USD 8-30)
1 day
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Description
Rheumatoid factor (RF) blood testing helps diagnose rheumatoid arthritis and other autoimmune conditions; patients in China may need it for joint pain or unexplained inflammation, with costs typically ranging ¥8–30 (¥50–200), and ChinaMedicalHub assists with hospital booking and interpreter support.
Main Uses
The primary purpose of the Rheumatoid Factor test is to help diagnose and monitor rheumatoid arthritis and other autoimmune diseases. It is also used to differentiate between types of arthritis and to assess the severity and prognosis of these conditions.
Normal Range
The normal range for Rheumatoid Factor (RF) is typically less than 20 IU/mL or negative. However, the exact range may vary slightly depending on the laboratory and the specific method used.
Low Values - Possible Causes
Low values of Rheumatoid Factor are generally not a concern as they are considered normal. However, if RF is undetectable in a patient with suspected autoimmune disease, it might indicate that the condition is in an early stage or that the disease does not produce RF.
High Values - Possible Causes
High values of Rheumatoid Factor can be caused by: 1. Rheumatoid Arthritis, 2. Sjögren's Syndrome, 3. Systemic Lupus Erythematosus, 4. Chronic infections such as hepatitis C, 5. Other autoimmune diseases or conditions like Sarcoidosis.