A blood component pathologically increased in concentration in various connective tissue disorders, notably rheumatoid arthritis.
an antibody that is usually found in the blood of adults who have rheumatoid arthritis is rarely present in children who have juvenile arthritis. Rheumatoid factor is more likely to occur in girls who have had many affected joints.
IgM antibodies produced by some patients against their own IgG.
autoantibody that is usually present in the serum of people with rheumatoid arthritis
An antibody that reacts with Ig (an immunoglobulin) found particularly in patients with rheumatoid arthritis.
A type of protein found in many patients with RA; detection of this factor through laboratory tests is one way to diagnose RA.
An antibody that is often present in the blood of people with rheumatoid arthritis.
An antibody, or protein, made by the immune system that eventually shows up in the blood of about 80 percent of rheumatoid arthritis patients.
Protein (immunoglobulin M, IgM) found in the blood of most people with rheumatoid arthritis.
abnormal protein in the blood of most people afflicted with rheumatoid arthritis or other autoimmune disease.
Rheumatoid factor is an antibody that is measurable in the blood. It is commonly used as a blood test for the diagnosis of rheumatoid arthritis. Rheumatoid factor is present in about 80% of adults (but a much lower proportion of children) with rheumatoid arthritis. It is also present in patients with other connective tissue diseases (such as systemic lupus erythematosus) and in some with infectious diseases (such as infectious hepatitis).
special kind of antibody often found in people with rheumatoid arthritis.
A blood test used to help diagnose rheumatoid arthritis (RA). The test may also be used to help diagnose the arthritis-related condition called Sjögren's syndrome.
A protein, an immunoglobulin M (IgM), found in serum and detectable on laboratory tests. It is associated with rheumatoid
detects whether rheumatoid factor is present in the blood (an antibody found in the blood of most, but not all, people who have rheumatoid arthritis, as well as other rheumatic diseases).
An autoantibody found in the serum of most persons with rheumatoid arthritis.
An autoantibody (usually IgM) which reacts with the individual's own IgG. Present in rheumatoid arthritis.
an antibody found in about 80% of people with rheumatoid arthritis; also appears in other diseases and sometimes in healthy people
A type of antibody found in the blood of some children with JRA (usually older girls with polyarticular JRA).
Rheumatoid factor (RF or RhF) is a blood test performed in patients with suspected rheumatoid arthritis (RA). It is an antibody against the Fc portion of IgG, which is itself an antibody, IgG, IgM or IgA type; RF and IgG form immune complexes, which are part of the disease process of various rheumatological diseases.