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Diabetes Glossary
Blood Sugar
Blood Sugar is the amount of glucose in the blood. Glucose, transported via the bloodstream, is the primary source of energy for the body's cells. Blood sugar concentration, or glucose level, is tightly regulated in the human body. Normally, the blood glucose level is maintained between about 4 and 8 mmol/L (70 to 150 mg/dL). The total measurement of glucose in the circulating blood is therefore about 3.3 to 7g (assuming an ordinary adult blood volume of 5 liters). Glucose levels rise after meals and are usually lowest in the morning, before the first meal of the day.
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