title: Reduced levels of tricyclic antidepressants in plasma from Vacutainers.
mesh_terms: D000929:Antidepressive Agents, Tricyclic / Q000097:blood*; D001800:Blood Specimen Collection / Q000379:methods; D004349:Drug Packaging; D006801:Humans; D011863:Radioimmunoassay; D012408:Rubber
chemical_list: D000929:Antidepressive Agents, Tricyclic; D012408:Rubber