The Rheumatoid Factor (RF) Test at Pamel Laboratories is a blood test used to detect the presence of rheumatoid factor antibodies—proteins produced by the immune system that may attack the body’s own tissues. It is commonly used in the diagnosis and monitoring of rheumatoid arthritis (RA) and other autoimmune or inflammatory conditions.
An elevated RF level may indicate an underlying autoimmune disorder, especially when accompanied by symptoms such as joint pain, stiffness, and swelling.
What the Test Detects:
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Rheumatoid Factor (RF) antibodies in the bloodstream
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Measured in IU/mL (international units per milliliter)
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Elevated RF levels may support the diagnosis of:
Purpose of the Test:
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Help diagnose rheumatoid arthritis
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Differentiate autoimmune diseases from other joint or systemic conditions
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Monitor disease progression or treatment response
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Evaluate unexplained symptoms such as joint inflammation or fatigue
Sample Type: Blood sample (serum)
Turnaround Time: Same day or within 24 hours
Important Notes:
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RF may be positive in healthy individuals or those with other conditions
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A negative RF test does not completely rule out rheumatoid arthritis (especially early-stage)
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Often combined with other tests such as Anti-CCP, CRP, or ESR for accurate diagnosis
