title: [Affinity constant in radioimmunoassay].
abstract: Values for the affinity constant were determined, in three kits, for seric gastrin, following the Scatchard plot and Michaelis-Menten representation. The determination of the affinity constant, K, is of great value for it defines the antigen-antibody complex stability and it gives information about some aspects of the analysis system: sensitivity and antibody saturation.
authors.affiliation: Centro de Investigação Oncológica (INIC), Instituto Português de Oncologia de Francisco Gentil, Lisboa.
authors.forename: M A
authors.initials: MA
authors.lastname: Ferra
authors.forename: C N
authors.initials: CN
authors.lastname: Leitão
mesh_terms: D005755:Gastrins / Q000097:blood*; D007700:Kinetics; D011863:Radioimmunoassay / Q000592:standards*; D011933:Reagent Kits, Diagnostic
chemical_list: D005755:Gastrins; D011933:Reagent Kits, Diagnostic
vernacular_title: Constante de Afinidade em Radioimunoanalise.