Coming Soon… The IGF-1 (Insulin-like Growth Factor-1) is a hormone produced by the liver in response to stimulation by growth hormone (hGH). It plays a crucial role in promoting growth and development, as well as regulating various metabolic processes in the body. It is commonly ordered in children and adolescents who exhibit signs of growth disorders, and with individuals receiving growth hormone replacement therapy. In adults, the test can aid in the diagnosis and monitoring of conditions like acromegaly and gigantism, which result from excessive production of growth hormone.