Diabetes is a chronic illness. It develops when the body no longer makes insulin, or the insulin it makes doesn’t work very well. Insulin is a hormone made by an organ called the pancreas, which is located near the stomach.
A normal blood glucose level is less than or equal to 100 mg/dL fasting (without food or drink for eight hours) and there should be no glucose or ketones in the urine. Diabetes is diagnosed by blood and urine tests and a medical exam.