title: Drug concentrations, not absorbance units, required for comparing precisions of different immunoassays.
authors.forename: F P
authors.initials: FP
authors.lastname: Smith
mesh_terms: D007118:Immunoassay; D004364:Pharmaceutical Preparations / Q000032:analysis*; D015203:Reproducibility of Results
chemical_list: D004364:Pharmaceutical Preparations