title: Anomalous between-laboratory variability in a collaborative study of carcinoembryonic antigen immunoassay.
mesh_terms: D002272:Carcinoembryonic Antigen / Q000592:standards*; D006801:Humans; D007118:Immunoassay / Q000592:standards; D007753:Laboratories / Q000592:standards*; D011786:Quality Control; D011933:Reagent Kits, Diagnostic / Q000592:standards; D013223:Statistics as Topic
chemical_list: D002272:Carcinoembryonic Antigen; D011933:Reagent Kits, Diagnostic