尿的颜色在一定程度上能够反映体内病理生理状态和若干物质代谢情况,很久以来人们就把观察尿色做为医学检查的基本内容之一.在生理情况下,新鲜尿液的颜色随尿液浓缩或稀释程度及所含色素的多少而变化,这种变化在很大程度上取决于饮水量的多少.一般来说,浓缩尿(如禁饮16小时以后比重在1.025以上的尿)呈深黄色;高度稀释尿(如按每公斤体重饮水20毫升,4小时内排出其80%时比重在1.002以下的尿)颜色极浅,近无色,但其中含有少量的尿色素、尿胆素和血卟啉,故有时亦可呈微黄色.许多化学药物进入人体后,大都以原形或经肾脏随尿排出,因此能使尿的颜色发生改变.这种单纯药物性尿色异常一般不难识别,若无药物中毒或伴发其它病理改变时,无需专门治疗.但能引起尿色异常的病理、生理原因也很多,因而在诊断上也 To some extent, the color of urine can reflect the pathophysiological state and some material metabolism in the body, people have put it for a long time to observe the urine color as one of the basic contents of medical examination.In the physiological situation, the color of fresh urine changes with urine Concentration or dilution and the amount of pigment contained in the change, this change depends largely on the amount of drinking water.In general, concentrated urine (such as 16 hours after drinking more than 1.025 urine) was deep Yellow; highly diluted urine (such as 20 ml per kilogram of body weight drinking water, 80% of its discharge within 4 hours, the proportion of less than 1.002 in urine) very light color, almost colorless, but it contains a small amount of urine pigment, Hematoporphyrin, it can sometimes be yellowish.Many chemicals into the human body, most of the prototype or by the kidneys with urine excretion, so that can change the color of urine.It is generally not difficult to identify the simple drug-like urine abnormalities , Without drug poisoning or associated with other pathological changes, no special treatment, but can cause urinary abnormalities in the pathological, physiological reasons are many, so in the diagnosis