Heat distribution unit. The Heat Distribution Unit (HDU), also known as a Heat Interface Unit (HIU), provides domestic hot water (DHW) and space heating to properties that are serviced from district heating or centralised boiler plants.
Called hypoglycemia, this deficiency of glucose in the blood is considered critical at, or below, 40 milligrams of glucose per deciliter of blood, or 40 mg/dL. However, this figure must be adjusted individually, as the exact level at which an a person develops symptoms varies.
A blood test may be administered to measure the amount of glucose in your bloodstream -- either through a home test kit or medical laboratory test. Your mean blood glucose refers to the average level of glucose present in your blood and generally reads between 60 and 110 mg per deciliter or lower in healthy adults. The Facts An excessively high mean blood glucose level, or hyperglycemia, may be an indicator of hyperthyroidism, pancreatitis, pancreatic cancer, acromegaly, Cushing's syndrome, pheochromocytoma, glucagonoma or diabetes.