title: High-pressure liquid chromatographic assay of theophylline in biological fluids.
mesh_terms: D000042:Absorption; D002110:Caffeine / Q000032:analysis; D055598:Chemical Phenomena; D002621:Chemistry; D002845:Chromatography / Q000379:methods*; D004355:Drug Stability; D006801:Humans; D006863:Hydrogen-Ion Concentration; D010076:Oxazepam / Q000032:analysis; D011312:Pressure; D013056:Spectrophotometry, Ultraviolet; D013696:Temperature; D013806:Theophylline / Q000032:analysis / Q000097:blood*; D013997:Time Factors; D014970:Xanthines / Q000032:analysis
chemical_list: D014970:Xanthines; D002110:Caffeine; D010076:Oxazepam; D013806:Theophylline