title: Determination of theophylline in plasma: comparison of high-performance liquid chromatography and an enzyme multiplied immunoassay technique.
mesh_terms: D002851:Chromatography, High Pressure Liquid; D004796:Clinical Enzyme Tests; D006801:Humans; D007118:Immunoassay; D013806:Theophylline / Q000097:blood*
chemical_list: D013806:Theophylline