Glucose is a simple sugar used as the body cells' primary energy source. Normally there should be no glucose in the urine, or in very small quantities. Urinary glucose
is detected with a strip dipped in a urine sample: this is called glycosuria. The presence of urinary glucose is caused by hyperglycemia
, glucose levels in the blood
are increased too, and when a threshold capacity of reabsorption by the kidney
is exceeded, the glucose is released into the urine. Glycosuria may be a way of discovering diabetes
, or mark the existence of poorly controlled diabetes.