The Rheumatoid Factor (RF) test measures the level of a specific antibody in the blood that can bind with other antibodies. These autoantibodies are often associated with autoimmune diseases, particularly rheumatoid arthritis. The presence of high RF levels may suggest the possibility of conditions such as rheumatoid arthritis, systemic lupus erythematosus, chronic infections like tuberculosis, or blood disorders such as leukemia.

RF plays a key role in autoimmune responses by mistakenly targeting the body’s own tissues. While not exclusive to any one disease, elevated RF values serve as an important indicator during diagnosis.

This test is primarily used by doctors to assist in diagnosing rheumatoid arthritis and to distinguish it from other joint-related or autoimmune conditions.

Orange Health Labs offers home sample collection for Rheumatoid Factor tests in Bangalore, making testing convenient and accessible.

The Rheumatoid Factor (RA) Test cost is Rs.560/-: This price includes home sample collection within 60 minutes of booking. Final pricing may vary slightly depending on the city

Note: You can check current pricing and availability for your location through the Orange Health platform.

No special preparation or fasting is required for the Rheumatoid Factor (RA) test.

Who Should Get This Test?

Patients showing joint-related symptoms or autoimmune signs Individuals being evaluated for RA or similar conditions Those undergoing testing for associated disorders like lupus or hepatitis

During the Test:

• A healthcare provider will locate a suitable vein, typically in the arm

• The area will be disinfected and a needle will be used to draw blood

• A small sample will be collected into a vial; the process takes less than 5 minutes

After the Test:

• A cotton swab and bandage will be applied

• Mild bruising or soreness may occur

• Results are generally available within 6 hours via email or WhatsApp

Doctors may recommend a Rheumatoid Factor test if a patient exhibits symptoms suggestive of rheumatoid arthritis or another autoimmune condition.

Symptoms include:

• Joint pain and swelling

• Morning stiffness lasting over 30 minutes

• Persistent fatigue and low-grade fever

• Loss of appetite and unintentional weight loss

• Weakness, dry eyes, dry mouth

• Presence of firm lumps under the skin

This test is also helpful in evaluating other conditions such as:

• Sjögren’s syndrome

• Lupus

• Juvenile arthritis

• Scleroderma

• Certain cancers (e.g., leukemia)

• Hepatitis C or tuberculosis

RF testing is not typically used for routine screening and is usually ordered when symptoms are present.

Rheumatoid Factor results may be reported as positive or negative, with numerical values providing additional context.

Normal RF level: Less than 15.8 IU/L

A negative result typically means RF is not detected or is within the normal range, but this does not rule out autoimmune disease. About 20% of people with RA may have a negative RF result.

Positive results may suggest an autoimmune or chronic inflammatory disorder, but are not definitive. Approximately 5–10% of healthy individuals may also test positive.