用薄层色谱法分析熊胆中的游离型胆汁酸及结合型胆汁酸，判断熊胆中是否掺有猪、牛、羊等动物胆汁，分析了其掺伪物黄连、糖。方法简便易行，指标明确。

Free and combined choic acid in bearbile were analyzed by TLC,to assess whether pig,cow or sheep bile were added as adulterants. Other adulterants Coptis chinensis Franch. and sugar were analyzed.The method was simple and its result clear cut.