title: The supraregional assay service (SAS) and the quality control of hormone assays.
mesh_terms: D006728:Hormones / Q000032:analysis*; D007753:Laboratories / Q000592:standards; D011786:Quality Control; D011933:Reagent Kits, Diagnostic
chemical_list: D006728:Hormones; D011933:Reagent Kits, Diagnostic