title: Metronidazole interference with procainamide HPLC assay.
mesh_terms: D002851:Chromatography, High Pressure Liquid / Q000379:methods; D006801:Humans; D008795:Metronidazole / Q000097:blood*; D011342:Procainamide / Q000097:blood*
chemical_list: D008795:Metronidazole; D011342:Procainamide