What is lab test RF?

A rheumatoid factor (RF) test detects rheumatoid factor in a patient’s blood. Rheumatoid factor is an autoantibody produced by the immune system. While normal antibodies attack pathogens like bacteria and viruses, autoantibodies such as RF mistakenly attack the body’s healthy cells and tissues.

What is RF blood test done for?

A rheumatoid factor (RF) blood test measures the amount of the RF antibody present in the blood. Normally, antibodies are produced by the immune system to help destroy and get rid of invading bacteria and viruses that can cause disease. But the RF antibody can attach to normal body tissue and cause damage.

What is normal rheumatoid factor?

The normal range of RF is from 0-20 IU/ml. RF above 20 IU/ml is not considered enough to diagnose RA, as there other reasons the RF level may be elevated.

What is considered high RF factor?

The “normal” range (or negative test result) for rheumatoid factor is less than 14 IU/ml. Any result with values 14 IU/ml or above is considered abnormally high, elevated, or positive.

How do you reduce RF factor?

The Arthritis Foundation states that foods high in fiber can reduce the amount of C-reactive protein (CRP) in your blood. This marker can indicate the level of inflammation in your body. Get more fiber in your diet with foods such as: fresh fruits and vegetables.

What is the Comprehensive Panel with RF and Ana?

The Arthritis Comprehensive Panel with RF and ANA includes: Comprehensive Metabolic Panel (CMP) C-Reactive Protein (CRP) Quantitative; Uric Acid; Sedimentation Rate, Modified Westergren (ESR) Rheumatoid Factor (RF) Antinuclear Antibodies (ANA) Turnaround time for the Arthritis Comprehensive Panel with RF and ANA is typically 1-3 business days.

What do you need to know about a RF test?

Rheumatoid Factor (RF) Test. What is a rheumatoid factor (RF) test? A rheumatoid factor (RF) test measures the amount of rheumatoid factor (RF) in your blood. Rheumatoid factors are proteins produced by the immune system. Normally, the immune system attacks disease-causing substances like viruses and bacteria.

How is the RF test used to diagnose Ra?

This test detects and measures RF in the blood and may be used, along with other tests, to help in the diagnose of rheumatoid arthritis (RA). RA is a chronic, systemic autoimmune disease that causes inflammation, pain, stiffness, and destructive changes in the hands, feet, and other joints throughout the body.

How are RF tests used in autoimmune disease?

While the biologic role of RF is not well understood, its presence is useful as an indicator of inflammatory and autoimmune activity. This test detects and measures RF in the blood and may be used, along with other tests, to help in the diagnose of rheumatoid arthritis (RA).