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.
Blood glucose level below 70 mg/dL is considered low blood sugar or hypoglycemia in case of people who have diabetes. At the same time, different blood glucose levels can manifest different symptoms in different people. In other words, there is no definite and fixed range that can be applicable to all.