Insulin is a polypeptide hormone, secreted by β-cells in the islets of Langerhans of the pancreas. It plays a crucial role in glucose homeostasis, cell growth and metabolism. Upon secretion, insulin circulates to hepatocytes where glucose is stored in the form of glycogen. Other targets of insulin include skeletal muscles and adipocytes which also take up glucose, thereby reducing blood glucose levels. Insulin triggers glucose uptake, muscle protein synthesis, glycogenesis and lipogenesis via the tyrosine kinase pathway. In addition to its well-studied role in diabetes, insulin acts on key organs in the body, including the brain, heart, kidneys, bone and skin.

The entire kit may be stored at -20°C for up to 1 year from the date of shipment. Avoid repeated freeze-thaw cycles. The kit may be stored at 4°C for up to 6 months. For extended storage, it is recommended to store at -80°C.