title: Choice of a satisfactory evacuated blood-collection tube for magnesium and zinc assays.
mesh_terms: D001800:Blood Specimen Collection / Q000295:instrumentation*; D005189:False Positive Reactions; D006801:Humans; D008274:Magnesium / Q000097:blood*; D015032:Zinc / Q000097:blood*
chemical_list: D008274:Magnesium; D015032:Zinc