你的医生对于糖尿病患者的结肠镜检查前的准备都有具体的指导，需要经常自查血糖，可以饮用透明的含糖饮料。

Generally, the day before the test, you'll only be able to have clear liquids. These include water, tea, coffee, clear juices and broths, gelatin, and sports drinks.