正常人每日从尿中排出葡萄糖约32～93mg,这样微量的糖用普通葡萄糖定性试验是检查不出来的。糖尿一般指每日尿中排糖超过150mg,糖尿原因很多,现浅谈其鉴别诊断如下。 一、糖尿病:(真性糖尿病) 糖尿是糖尿病的主要表现,临床上凡遇尿糖阳性的患者,均应考虑糖尿病的可能。但尿糖阳性不一定是糖尿病。而尿糖阴性也未必一定不是糖尿病。诊断本病时应注意:①因为血糖浓度在餐后2小时左右最高,空腹尿糖阴性者,此时留尿检查尿 Normal daily discharge of glucose from the urine about 32 ~ 93mg, such a trace amount of sugar qualitative test with ordinary glucose can not check out. Diabetes generally refers to the daily urine glucose more than 150mg, many causes of diabetes, are now on its differential diagnosis is as follows. First, diabetes: (true diabetes) Diabetes is the main manifestation of diabetes, clinically all patients with positive urine sugar should be considered the possibility of diabetes. But positive urine is not necessarily diabetes. And negative urine may not necessarily be not diabetes. Diagnosis of the disease should pay attention to: ① because the blood glucose concentration in the postprandial 2 hours or so, fasting urine negative, urine test urine