title: Growing use of nonisotopic CA 19-9 immunoassays increases between-laboratory variability.
authors: G C
authors: GC
authors: Zucchelli
authors: A
authors: A
authors: Pilo
authors: M R
authors: MR
authors: Chiesa
authors: R
authors: R
authors: Cohen
authors: C A
authors: CA
authors: Bizollon
mesh_terms: D015295:Antigens, Tumor-Associated, Carbohydrate / Q000097:blood*; D005770:Gastrointestinal Neoplasms / Q000276:immunology*; D006801:Humans; D007118:Immunoassay; D015592:Immunoradiometric Assay
chemical_list: D015295:Antigens, Tumor-Associated, Carbohydrate