Rheumatoid Factor - Qualitative
What is RF Qual.?
Rheumatoid factor is an autoantibody which is produced by the body’s immune system. Rheumatoid factor test measures the presence or absence of Rheumatoid Factor (RF) which helps in diagnosing autoimmune disorders like rheumatoid arthritis. RF is an autoantibody that is produced by the body’s immune system. It attacks body tissues considering them as foreign tissues. Presence of RF indicates that there is autoinflammatory and autoimmune activity going on in the body.
Why is RF Qual. done?
To diagnose rheumatic diseases such as Rheumatoid arthritis
To diagnose autoimmune diseases such as Sjogren’s syndrome or Lupus Erythematosus
To diagnose chronic infections
What does RF Qual. Measure?
Rheumatoid factor (RF) attacks healthy body tissues as it mistakes them for foreign body tissues. It is not found in healthy persons. The presence of RF means that the body has an autoimmune disease such as Rheumatoid arthritis. Symptoms of Rheumatoid arthritis include stiffness of joints especially in morning, pain in joints, underlying skin nodules, loss of bone and swelling of joints.
Interpreting RF Qual. results
Positive Rheumatoid factor test indicates the high level of rheumatoid factor in the blood which is associated with Rheumatoid arthritis.
There are other conditions where RF test is positive that include:
Systemic Lupus erythematosus
Inflammatory lung diseases
Mixed connective tissue diseases