Even healthy individuals occasionally test positive—about 4% of the general population has elevated rheumatoid factor without any disease symptoms. This percentage increases with age, reaching ...

A positive result means you have a higher-than-normal level of rheumatoid factor in your blood. It may be a sign of rheumatoid arthritis , other autoimmune diseases, or an underlying infection.

The results showed, moreover, that in rheumatoid patients in whom all three tests were positive, rheumatoid factor was different and separable from the factors that produced L.E. cells and nuclear ...

Rheumatoid factor (RF) is a type of antibody, an immune system protein that helps the body fight foreign substances like bacteria and viruses, called antigens. Antibodies, also known as ...

If you have moderate stage RA, you are more likely to have blood tests that are positive for rheumatoid factor or anti-CCP. Imaging tests may also show early signs of joint damage, ...

Source Reference: Lönnblom E, et al "Autoantibodies to disease-related proteins in joints as novel biomarkers for the diagnosis of rheumatoid arthritis" Arthritis Rheumatol 2023; DOI: 10.1002/art ...

Positive latex tests for rheumatoid factor were found in approximately two thirds of the patients. For several reasons this occurrence is of particular interest.

Polyarticular juvenile idiopathic arthritis-rheumatoid factor positive. In this type, 5 or more joints become affected within 6 months. But the child will have positive rheumatoid factor test ...