title: [Therapeutic and clinical implications of elevated levels of vitamin B12].
abstract: In general practice, vitamin B12 levels are measured when searching an origin for an anemic status (usually megaloblastic anemia), for various neurological disorders (usually polyneuropathy) or for neurocognitive disorders. Although the pathologies associated with vitamin B12 deficiency are well known, hypervitaminemic B12 status is often fortuitous and frequent finding. The aim of this article is to present the disease entities associated with hypervitaminemia B12, the clinical implications of this dysvitaminosis and a practical approach when this laboratory abnormality is found.
authors.affiliation: Service de médecine interne, Département de médecine CHUV, 1011 Lausanne. monica.cosma@chuv.ch
authors.forename: M Cosma
authors.initials: MC
authors.lastname: Rochat
authors.forename: P
authors.initials: P
authors.lastname: Vollenweider
authors.forename: G
authors.initials: G
authors.lastname: Waeber
mesh_terms: D000465:Algorithms; D001327:Autoimmune Diseases / Q000097:blood / Q000175:diagnosis; D005260:Female; D006402:Hematologic Diseases / Q000097:blood / Q000175:diagnosis; D006801:Humans; D008107:Liver Diseases / Q000097:blood / Q000175:diagnosis; D009369:Neoplasms / Q000097:blood / Q000175:diagnosis; D011247:Pregnancy; D047928:Premature Birth / Q000097:blood / Q000175:diagnosis; D051437:Renal Insufficiency / Q000097:blood / Q000175:diagnosis; D014805:Vitamin B 12 / Q000097:blood*
chemical_list: D014805:Vitamin B 12