title: Effect of Vacutainer stoppers on plasma tricyclic levels: a reevaluation.
mesh_terms: D000929:Antidepressive Agents, Tricyclic / Q000097:blood*; D001800:Blood Specimen Collection / Q000295:instrumentation*; D002849:Chromatography, Gas; D004349:Drug Packaging; D004912:Erythrocytes / Q000032:analysis; D005069:Evaluation Studies as Topic; D006801:Humans; D013058:Mass Spectrometry
chemical_list: D000929:Antidepressive Agents, Tricyclic