title: [Significance of reduced complement level in the articular fluid. 81 cases].
abstract: Based on their own experience, the authors report that a fall in the complement level of joint fluid, which is particularly common in rhumatoid arthritis, is also seen in cases of systemic lupus eryrthematosis and a variety of arthritis: infectious arthritis, gout, articular chondrocalcinosis and psoriatic rheumatism. This should be taken into account when evaluating the diagnostic value of this test in rheumatoid arthritis.
mesh_terms: D001170:Arthritis, Infectious / Q000276:immunology; D001172:Arthritis, Rheumatoid / Q000276:immunology*; D002805:Chondrocalcinosis / Q000276:immunology; D003165:Complement System Proteins / Q000032:analysis*; D006073:Gout / Q000276:immunology; D006801:Humans; D007592:Joint Diseases / Q000276:immunology*; D008180:Lupus Erythematosus, Systemic / Q000276:immunology; D012216:Rheumatic Diseases / Q000276:immunology; D013582:Synovial Fluid / Q000276:immunology*
chemical_list: D003165:Complement System Proteins
vernacular_title: Signification de la diminution du taux du complément dans le liquide articulaire. A propos de 81 cas.