title: [Can a threshold biological value be used in a multicenter study? The example of ferritinemia].
authors.affiliation: Unité in vitro de médecine nucléaire, hôpital de Bellevue, Saint-Etienne, France.
authors.forename: J C
authors.initials: JC
authors.lastname: Fréville
authors.forename: D
authors.initials: D
authors.lastname: Frappaz
authors.forename: M
authors.initials: M
authors.lastname: Vindimian
mesh_terms: D005293:Ferritins / Q000097:blood*; D006432:Hemochromatosis / Q000097:blood; D006801:Humans; D008452:Maximum Allowable Concentration; D009447:Neuroblastoma / Q000097:blood / Q000473:pathology
chemical_list: D005293:Ferritins
vernacular_title: Une valeur biologique seuil est-elle utilisable dans une étude multicentrique? L'exemple de la ferritinémie.