METHODS Contrasting with Indigo Blue and Indirubin,Radix Isatidis Herbs and Radix Isatidis Oral Liquid were identified by TLC.

• 方法采用薄层色谱法,以靛蓝、靛玉红为对照品,对制剂投料用板蓝根饮片及成品板蓝根口服液进行薄层鉴别。