Glucose (Glucose). If glucose has been taken in large quantities, then for a short time glucose may appear in the urine; in principle, glucose is normally absent in urine. It is also possible to determine the signs of the beginning formidable complication of diabetes - ketoacidosis - on your own, using ketoacidosis - special strips of paper that, in the presence of a drop of urine, change their color in the presence of ketonuria - a sign of ketoacidosis. The sooner you start treatment for ketoacidosis, the more likely you are to avoid developing a diabetic coma. In the urine, as already mentioned, glucose is usually absent in the norm, but with uncompensated diabetes mellitus, glucose in the urine can reach several percent.