title: Stoppers of blood-collecting tubes as sources of contamination in the fluorometry of vitamins A and E.
mesh_terms: D001800:Blood Specimen Collection; D003951:Diagnostic Errors; D005470:Fluorometry; D006801:Humans; D012408:Rubber; D014801:Vitamin A / Q000097:blood*; D014810:Vitamin E / Q000097:blood*
chemical_list: D014801:Vitamin A; D014810:Vitamin E; D012408:Rubber