Rheumatoid factor interference with the latex agglutination test for fibrin degradation products. 1978

J E Rutstein, and J R Holahan, and R M Lyons, and R M Pope

The latex agglutination test for FDP is widely employed clinically to aid in the diagnosis of DIC and other conditions. Of sera containing RF, 93% demonstrated positive FDP latex agglutination tests. Reducing agents in all instances destroyed the RF agglutinating capability. Futhermore, 86% of sera positive for FDP and RF became FDP-negative following reduction. Therefore RF was responsible for false-positive FDP latex agglutination tests in the majority of patients. Reduction of patient sera is a rapid, simple method to distinguish a positive FDP test from a false-positive due to RF.

UI MeSH Term Description Entries
D007841 Latex Fixation Tests Passive agglutination tests in which antigen is adsorbed onto latex particles which then clump in the presence of antibody specific for the adsorbed antigen. (From Stedman, 26th ed) Latex Agglutination Tests,Agglutination Test, Latex,Agglutination Tests, Latex,Fixation Test, Latex,Fixation Tests, Latex,Latex Agglutination Test,Latex Fixation Test,Test, Latex Agglutination,Test, Latex Fixation,Tests, Latex Agglutination,Tests, Latex Fixation
D005338 Fibrin Fibrinogen Degradation Products Soluble protein fragments formed by the proteolytic action of plasmin on fibrin or fibrinogen. FDP and their complexes profoundly impair the hemostatic process and are a major cause of hemorrhage in intravascular coagulation and fibrinolysis. Antithrombin VI,Fibrin Degradation Product,Fibrin Degradation Products,Fibrin Fibrinogen Split Products,Degradation Product, Fibrin,Degradation Products, Fibrin,Product, Fibrin Degradation
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D001168 Arthritis Acute or chronic inflammation of JOINTS. Oligoarthritis,Polyarthritis,Arthritides,Oligoarthritides,Polyarthritides
D001172 Arthritis, Rheumatoid A chronic systemic disease, primarily of the joints, marked by inflammatory changes in the synovial membranes and articular structures, widespread fibrinoid degeneration of the collagen fibers in mesenchymal tissues, and by atrophy and rarefaction of bony structures. Etiology is unknown, but autoimmune mechanisms have been implicated. Rheumatoid Arthritis
D012217 Rheumatoid Factor Autoantibodies found in adult RHEUMATOID ARTHRITIS patients that are directed against GAMMA-CHAIN IMMUNOGLOBULINS. Factor, Rheumatoid

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