Deliver it to the laboratory or your health care provider as soon as possible upon completion. No special preparation is necessary for this test, but if the collection is being taken from an infant, a couple of extra collection bags may be necessary. The test involves only normal urination, and there is no discomfort. There are no risks. Most dietary carbohydrate eventually ends up as glucose in the blood.
Excess glucose is converted to glycogen for storage by the liver and skeletal muscles after meals.
Glycogen is gradually broken down to glucose and released into the blood by the liver between meals. Glucose is a major source of energy for most cells of the body. The brain, in fact, requires that glucose concentrations in the blood remain within a certain range in order to function normally. Glucose levels are measured most commonly to diagnose diabetes or to monitor adequacy of diabetic control. Diabetes results from deficient insulin or sensitivity to insulin.