title: Pre-analytical errors: everything that happens to the specimen up to the point of testing.
authors.forename: Paul G
authors.initials: PG
authors.lastname: McDonough
mesh_terms: D001800:Blood Specimen Collection / Q000379:methods*; D006710:Homocysteine / Q000097:blood*; D006801:Humans; D011786:Quality Control; D012016:Reference Values
chemical_list: D006710:Homocysteine