IGF-1 stands for Insulin-like Growth Factor 1. IGF-1 is also known as Somatomedin-C. As important as HGH is, it does not last long in our bloodstream. In just a few short minutes our liver absorbs HGH and converts it into growth factors. IGF-1 is the most important growth factor that is produced. So, IGF-1 is a hormone just like HGH, but it is easier to measure in the body because it stays in our bloodstream longer than HGH. You can think of HGH as the hormone that gets the ball rolling, but IGF-1
