管黄在中药材商品中并不多见, 其伪劣品在医药市场上也很少发现。作者对所收“管黄”检样进行了性状、经验、显微、理化鉴别实验, 结果是一种以牛肝管冒充管黄的伪劣品。附真伪品形态、显微特征图比较。

In the course of routive drug inspection the shapes and properties of some samples of Guanhuang, calculi obtained from cow bile duct, were subjected to miscrospic examination. Result of the examination revealed that the samples were actually some kind of vessel of cow's liver instead of the genuine Guanhuang. Ways of distinguishing Guanhuang from the fakes were presented with four diagrams of their shapes abd features shown.