牛黄是常用的贵重类中药,由于是分散采收,经多渠道集散,往往使得同一份检体中的个体差别较大。在药材的经销中有蛋黄、管黄的区别。因此,在检验鉴别牛黄的过程中要做到真假分开、优劣判明。下面是我们在长期的检验工作中遇到的典型案例及检验后的一些经验、体会。取样前对全部 Niuhuang is a commonly used valuable traditional Chinese medicine. Because it is scattered and harvested, distribution through multiple channels often makes individual differences in the same sample larger. There are differences between egg yolk and tube yellow in the distribution of medicinal materials. Therefore, in the process of identifying and identifying bezoar, true and false should be separated and the advantages and disadvantages should be determined. The following is a typical case we encountered in the long-term inspection work and some experiences and experiences after the inspection. Before sampling all