title: The analysis of meperidine and normeperidine in biological specimens.
mesh_terms: D002849:Chromatography, Gas; D002855:Chromatography, Thin Layer; D006801:Humans; D013058:Mass Spectrometry; D008614:Meperidine / Q000031:analogs & derivatives* / Q000032:analysis* / Q000097:blood / Q000652:urine; D014018:Tissue Distribution
chemical_list: D008614:Meperidine; C002752:normeperidine