Aug 26, 2023 · A positive rheumatoid factor test result shows that you have a high level of rheumatoid factor in your blood. A higher level of rheumatoid factor in your blood is closely …

The rheumatoid factor is an antibody present in the blood of many patients with rheumatoid arthritis. Doctors measure the level of rheumatoid factor by performing a blood test. A positive …

Jan 18, 2024 · Positive means you have high levels of rheumatoid factor. It might seem confusing for negative to be a “good” test result, but that means your blood doesn’t show unusual …

This blood test measures rheumatoid factors. High levels of rheumatoid factors may be a sign of rheumatoid arthritis or another autoimmune disease. Learn more.

Aug 20, 2025 · Rheumatoid factor (RF) is an immune system protein that attacks healthy cells. An RF test is a blood test that can help diagnose rheumatoid arthritis. While high RF levels can …

May 4, 2025 · Healthcare providers may recommend an RF test if you have symptoms such as joint pain, joint swelling, fatigue, low fever, and unexplained weight loss. 1.

Sep 17, 2025 · But a positive rheumatoid factor doesn’t always mean you have rheumatoid arthritis. Understanding what this test actually reveals—and what it doesn’t—is essential for …

Any result with values 14 IU/ml or above is considered abnormally high, elevated, or positive. What do high rheumatoid levels mean? High levels of rheumatoid factor (rheumatoid factor …

A positive rheumatoid factor test result shows that you have a high level of rheumatoid factor in your blood. A higher level of rheumatoid factor in your blood is closely linked with autoimmune …

Sep 4, 2024 · If your doctor tells you that your rheumatoid factor test is positive, it means that your RF levels are higher than they should be. By itself, it doesn't tell you what condition you have.