title: Methyldopa as an internal standard for catecholamine analysis by use of high-performance liquid chromatography.
mesh_terms: D002395:Catecholamines / Q000097:blood*; D002851:Chromatography, High Pressure Liquid / Q000592:standards; D006801:Humans; D008750:Methyldopa / Q000592:standards*
chemical_list: D002395:Catecholamines; D008750:Methyldopa