What happens if RA factor is high?
A positive rheumatoid factor test result indicates that a high level of rheumatoid factor was detected in your blood. A higher level of rheumatoid factor in your blood is closely associated with autoimmune disease, particularly rheumatoid arthritis.
What does a rheumatoid factor of 100 mean?
RF Test Results In a person with signs and symptoms of early arthritis and a positive RF test: The arthritis is likely to be persistent (it won’t go away) A high RF level (in the 100s or 1000s) can mean the arthritis is more severe. It is very likely that the person has RA.
Is rheumatoid factor 10 high?
Most medical centers consider the normal range of rheumatoid factor to be up to 10 IU/mL or 20 IU/mL, says rheumatologist Steffan Schulz, MD, assistant professor of clinical medicine with Penn Medicine in Philadelphia.
What does it mean to have high rheumatoid factor?
Rheumatoid factor is an immune system protein that attacks healthy body cells. High levels of rheumatoid factor in the blood can indicate an autoimmune condition, such as rheumatoid arthritis. A rheumatoid factor (RF) test is a blood test that can help diagnose rheumatoid arthritis (RA). High RF levels can indicate RA,
What does a rheumatoid factor blood test show?
Rheumatoid factor is an immune system protein that attacks healthy body cells. High levels of rheumatoid factor in the blood can indicate an autoimmune condition, such as rheumatoid arthritis. A rheumatoid factor (RF) test is a blood test that can help diagnose rheumatoid arthritis (RA).
What is the normal rheumatoid factor ( RF )?
Range (IU/ml or International Units per Milliliter) Rheumatoid Factor (RF) Less than 14 IU/mL. A rheumatoid factor of less than 14 IU/mL is considered to be normal. In the Titer method, the normal ratio is less than 1:80 or 1 to 80.It is to be noted that the normal levels may vary slightly in different laboratories.
Do you need to fast before a rheumatoid factor test?
You need not fast before the test. However, if you are doing some other blood tests, your doctor may ask you not to eat or drink anything before the blood test. What happens during a Rheumatoid Factor test? The rheumatoid factor or the RF test is a blood test wherein a blood sample is taken from the upper part of your arm.