The hormone is released from the pancreas when blood glucose is elevated above a normal range.

The hormone INSULIN is released from the pancreas when blood glucose is elevated above a normal range.

This hormone regulates your blood sugar level. When your blood glucose is elevated above a normal range, the insulin is released from the pancreas. It then attaches itself to the cells and signals them to absorb the excess sugar from the blood stream. 

If your blood sugar level is low, insulin signals the release of stored sugar to the blood stream to maintain the normal level of your blood glucose.