title: Sensitivity and specificity are not constant test characteristics.
authors.forename: J J
authors.initials: JJ
authors.lastname: Godyn
authors.forename: J E
authors.initials: JE
authors.lastname: Tomaszewski
mesh_terms: D019411:Clinical Laboratory Techniques / Q000592:standards*; D006801:Humans; D012680:Sensitivity and Specificity