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.
Prediabetes is sometimes called impaired glucose tolerance or impaired fasting glucose (IGT/IFG), depending upon the test that yielded the abnormal result. In prediabetes, a person's blood sugar (glucose) levels are slightly higher than the normal range, but not high enough for a true diagnosis of diabetes. People with prediabetes have a significant risk of developing full-blown diabetes.