Friday, May 31, 2013

Does Sugar or Glucose in Urine Mean Diabetes

Does sugar or glucose in urine means diabetes? When some of us go to have a physical examination and are told to have s sugar or glucose in urine, we will become anxious and doubt that they have got diabetes.
Long long ago, patients find out they have got diabetes from sugar in urine. With the development of modern technology, we find out that the essential manifestation for diabetes is abnormal amount of sugar in blood. However, sugar in urine does not always stand for diabetes and diabetes does not always means there must be sugar in urine.
How does it come? Our kidney is just like a filtration net, which can filtrate the useless substances and discharge them into urine. In addition, kidney can also prevent the useful material from leaking out such as glucose by the reabsorption function of renal tubules. So in normal condition, there is nearly no glucose in the urine. Of course, due to many reasons, glucose will pass through the filtration net and in urine, glucose will be diagnosed. The normal range of renal glucose threshold is 8.9 to 10 mol/L.
Besides the above mentioned, in the following conditions, blood in urine can also appear, which has no relationship with diabetes as well.
1. renal glycosuria
Due to congenital damage in kidney or other reasons, the reabsorption ability of renal tubules, the sugar in urine shows positive.
2. gestation glycosuria
In gestation period, there will be more blood flow in the kidney, and the intake of glucose will increase accordingly. When it is out of the reabsorption ability, the glucose in urine will show positive.
3. nutrition type glycosuria
Some people feel hungry very much and take in many foods rich in sugar, and in this case, blood sugar will increase for the time being.

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