title: Determination of theophylline and its metabolites in human urine and serum by high-pressure liquid chromatography.
mesh_terms: D000284:Administration, Oral; D000628:Aminophylline / Q000008:administration & dosage; D002110:Caffeine / Q000378:metabolism; D055598:Chemical Phenomena; D002621:Chemistry; D002845:Chromatography / Q000379:methods*; D002852:Chromatography, Ion Exchange; D006801:Humans; D007042:Hypoxanthines / Q000378:metabolism; D008745:Methylation; D011312:Pressure; D013806:Theophylline / Q000097:blood / Q000378:metabolism* / Q000652:urine; D014527:Uric Acid / Q000032:analysis / Q000097:blood / Q000652:urine; D014970:Xanthines / Q000302:isolation & purification / Q000652:urine
chemical_list: D007042:Hypoxanthines; D014970:Xanthines; D014527:Uric Acid; D000628:Aminophylline; D002110:Caffeine; D013806:Theophylline