IGF-1 LR3

Long R3 Insulin-like Growth Factor-1

IGF-1 LR3 (Long R3 Insulin-like Growth Factor-1) is an engineered 83-amino-acid analogue of human IGF-1, the growth factor the liver produces in response to growth hormone. It was designed to slip past the binding proteins that normally hold IGF-1 in check, giving it far greater potency and a much longer working life than the natural molecule. It is widely used as a research tool in cell culture and growth-factor biology.