Urine tests that show elevated glucose require further blood glucose measurements to further rule out diabetes. When the sugar level in the body is elevated, it can appear to exceed the threshold of sugar uptake by the kidneys, and an increase in urinary glucose occurs. Possible scenarios: 1. The patient suffers from diabetes and has elevated blood sugar, which can then cause increased urine sugar. Most of the blood sugar more than 10mmol / L later, it may appear more than the sugar threshold of the kidney, the result of positive urine sugar. At this point, a fasting blood glucose measurement can be taken, either by blood sampling or by fingertip blood collection. If the blood sugar is elevated, then the patient may have diabetes, and need to carry out glucose tolerance test, glycated hemoglobin and other tests to confirm the diagnosis. 2, if the patient consumes a large number of foods containing sugar, or intravenous infusion of glucose injection, then go to the urine specimen, which may lead to elevated sugar. It is recommended to take urine routine examination on a later date, and prohibit the consumption of sugary food or glucose infusion before the examination, so as to exclude the error caused by diet or input.