title: Overview: quality control of tumor marker assays.
abstract: Data from interlaboratory surveys for the determination of CA 125 (1987 to 1998) show large differences depending on the commercial kit used. Samples of the same material produced different analytical results in different interlaboratory surveys, thus showing that some kits did not have a satisfactory rate of reproducibility over a longer period of time.
authors.affiliation: Deutsche Gesellschaft für Klinische Chemie e. V., Referenzinstitut für Bioanalytik, Bonn-Germany.
authors.forename: R
authors.initials: R
authors.lastname: Kruse
authors.forename: W J
authors.initials: WJ
authors.lastname: Geilenkeuser
authors.forename: G
authors.initials: G
authors.lastname: Röhle
mesh_terms: D014408:Biomarkers, Tumor / Q000097:blood; D018394:CA-125 Antigen / Q000097:blood*; D005858:Germany; D006801:Humans; D007753:Laboratories / Q000592:standards*; D011786:Quality Control; D011933:Reagent Kits, Diagnostic / Q000592:standards*; D015203:Reproducibility of Results
chemical_list: D014408:Biomarkers, Tumor; D018394:CA-125 Antigen; D011933:Reagent Kits, Diagnostic