Rheumatoid Arthritis Factor Test
RA Factor Test – Rheumatoid factors are proteins produced by your immune system that can attack healthy tissue in your body. Rheumatoid factor is an autoantibody most often associated with autoimmune diseases; mostly Rheumatoid arthritis which attacks synovial joints and Sjögren’s syndrome that affects the glands that produce tears & saliva.
What is Rheumatoid Arthritis Factor Test?
When the rheumatoid factor in the blood is high, it is often due to autoimmune diseases, like rheumatoid arthritis and Sjogren’s syndrome. However, the rheumatoid factor has also been detected in some healthy people, and there are people with normal levels of rheumatoid factor and still suffering from autoimmune diseases. The reasons for this are still unclear.
Why RA Factor Test Advised?
Rheumatoid arthritis doesn’t have specific symptoms but creeps into the system very slowly with symptoms from other diseases and viruses, and gradually the frequency of these symptoms increases and the immune system becomes more vulnerable and weak. Along with this test, there might be tests suggested by the doctor for Sjögren syndrome. In this disease, the mucous membranes and the moisture-secreting glands of the mouth and eyes are attacked by white blood cells. These conditions result in dry mouth and eyes and excessive fatigue and joint and muscle pain.
RA Factor Test Result Interpretations
In the case of the RF test, the results are reported as a titer. Basically, it is a measurement of how much dilution is needed in the blood, so that the RF antibodies are no longer detectable. For 80% of the people suffering from rheumatoid arthritis, the test is positive. However, the titer level determines the severity of the disease.
Post the patient has been treated with any disease-modifying agents, there has been a visible decrease in the RF titer values. In case the disease needs to be monitored further, C-reactive protein (CRP) and the Erythrocyte sedimentation rate (ESR, or sed rate) tests can be used.
Further, it’s important to understand that a positive test doesn’t necessarily mean that one has rheumatoid arthritis.
- Overnight fasting is not required
- Doctor’s prescription may be needed
- The normal test result may vary depending on gender, age, health history, etc.
- Home Visit Collection Facility Available For The Test Amount Above ₹499
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