rheumatoid factors


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Related to rheumatoid factors: RF test

rheu·ma·toid fac·tors (RF),

antibodies in the serum of patients with rheumatoid arthritis. These factors are autoantibodies of the classes IgM, IgG, and IgA. The most common factor is IgM and is the one usually measured. Rheumatoid factors also occur in other autoimmune and certain infectious diseases.

rheu·ma·toid fac·tors

(rū'mă-toyd fak'tŏrz)
Antibodies in the serum of people with rheumatoid arthritis that react with antigenic determinants or immunoglobulins that enhance agglutination of suspended particles coated with pooled human gamma-globulin; also occur in other autoimmune diseases and certain infectious diseases.

rheumatoid factors

The antibodies (immunoglobulins) present in the blood in cases of RHEUMATOID ARTHRITIS. These are IgM, IgG and IgA autoantibodies to the patient's own IgG.
References in periodicals archive ?
RA begins as an acute Arthus-like inflammation in the synovial fluid, in which IgM and IgG rheumatoid factors (anti immunoglobulins) are present in serum and in the joints.
Further adding to diagnostic delay is that patients with IE may have a positive rheumatoid factor in 19% of cases.
Rheumatoid factors in subacute bacterial endocarditis and other infectious diseases.
Fc-Fab, bridging of two immunoglobulins as a result of rheumatoid factor activity.
40 Clinical summary Rheumatoid Rheumatoid arthritis arthritis, chest infection, atrial fibrillation Medication Prednisolone Ossopan, salazopyrine, ibuprofen, prednisolone, digoxin, bendrofluazide Rheumatoid factor (<20 3640 1280 kU/L) Anti-nuclear antibody Negative Diffuse 1:640 Serum gamma globulin Polyclonal Polyclonal Anti-thyroglobulin Negative 3900 antibody (<250 kU/L) Anti-microsomal antibody Negative Negative (<250 kU/L) Patients (all women) (b) 3 4 Age, years 82 82 FT4 (9.
Elevated rheumatoid factor and long term risk of rheumatoid arthritis: a prospective cohort study.
Objective: To investigate the impact of infliximab treatment on anticyclic citrullinated peptide (anti-CCP) antibody and rheumatoid factor (RF) levels in patients with rheumatoid arthritis (RA).
Rheumatoid factor was first mentioned in 1958 in the Association of American Rheumatism (ARA) evaluation criteria.