title: Measurement of IgM rheumatoid factor by ELISA.
authors.forename: E
authors.initials: E
authors.lastname: Ulvestad
authors.forename: L L
authors.initials: LL
authors.lastname: Wilfred
authors.forename: E K
authors.initials: EK
authors.lastname: Kristoffersen
mesh_terms: D001172:Arthritis, Rheumatoid / Q000175:diagnosis*; D019411:Clinical Laboratory Techniques; D004797:Enzyme-Linked Immunosorbent Assay / Q000379:methods*; D006801:Humans; D007075:Immunoglobulin M / Q000032:analysis*; D012217:Rheumatoid Factor / Q000032:analysis*; D012219:Rheumatology / Q000379:methods; D012680:Sensitivity and Specificity
chemical_list: D007075:Immunoglobulin M; D012217:Rheumatoid Factor