RA Factor Test

RA Factor (rheumatoid factor) is an antibody that is present in the blood of some individuals with rheumatoid arthritis (RA). The Turbidimetric test is one method used to measure the level of RA Factor in the blood.

Pre-test preparation: There is no special preparation required for the RA Factor (Turbidimetric) test.

Testing method: The RA Factor (Turbidimetric) test is a blood test that measures the level of RA Factor in the blood. The test is performed by taking a sample of blood from the patient and measuring the level of RA Factor using a turbidimeter, which is a device that measures the amount of light that is scattered by particles in a liquid.

Common symptoms for prescribing this test: RA Factor test is commonly prescribed for patients who have symptoms of rheumatoid arthritis such as joint pain and stiffness, fatigue, and fever.

Diagnosis: The results of the RA Factor test can help to diagnose rheumatoid arthritis. A positive test result (high level of RA Factor in the blood) is indicative of rheumatoid arthritis, but a negative test result (low level of RA Factor in the blood) does not rule out the possibility of rheumatoid arthritis. Other tests and examinations may also be needed to make a diagnosis.

Reference range: The reference range for RA Factor varies depending on the laboratory. Typically, the normal range is less than or equal to 15-20 IU/mL.

Normal values: A normal result for the RA Factor (Turbidimetric) test is a RA Factor level of less than or equal to 15-20 IU/mL.

Medical disclaimer: The RA Factor (Turbidimetric) test is not a definitive test for the diagnosis of rheumatoid arthritis and should be interpreted in conjunction with other tests and clinical examination. A positive test result may be seen in other conditions such as lupus, Sjogren’s syndrome and infectious mononucleosis. A negative test result does not rule out the possibility of rheumatoid arthritis. Therefore, proper diagnosis should always be made by a qualified healthcare professional.