March 22, 2018
Rheumatoid Factor (RF) – Normal Value
Spread the love
When you have joint pain and fatigue that might be suspected caused by rheumatoid arthritis (RA), your health provider may order rheumatoid factor test.
Test Sample
A blood sample from arm vein.
Test Preparation
None.
Test Results
A positive rheumatoid factor test result indicates that a high level of rheumatoid factor was detected in your blood. A higher level of rheumatoid factor in your blood is closely associated with autoimmune disease, particularly rheumatoid arthritis.
The RF test must be interpreted in conjunction with a person’s symptoms and clinical history.
These tests are usually conducted along with RF test to help pinpoint a diagnosis of rheumatoid arthritis.
- Anti-nuclear antibody (ANA)
- Anti-cyclic citrullinated peptide (anti-CCP) antibodies
- C-reactive protein (CRP)
- Erythrocyte sedimentation rate (ESR, or sed rate)