title: Results of tests for rheumatoid factor on CAP survey specimens.
abstract: Performances of participants for the detection and measurement of rheumatoid factor on 18 consecutive CAP survey specimens are tabulated. All reagents used by participants performed well qualitatively on the positive and negative specimens. Quantitation of positive specimens by titer and International Units demonstrated prominent interlaboratory variance.
mesh_terms: D006801:Humans; D007841:Latex Fixation Tests / Q000379:methods / Q000592:standards; D009391:Nephelometry and Turbidimetry; D010338:Pathology, Clinical / Q000592:standards*; D011786:Quality Control; D012217:Rheumatoid Factor / Q000032:analysis*; D012955:Societies, Medical; D014481:United States
chemical_list: D012217:Rheumatoid Factor