The Actions of IGF 1 in the Growth Plate and Its Role in Postnatal Bone Elongation Current Osteoporosis Reports Springer Nature Link Primary IGF 1 Deficiency Child Growth Foundation IGF 1 The Definitive Guide IGF LR3 is a peptide that play a role in muscle growth, tissue repair and recovery. But like all peptide therapies, it's not one size fits all. We focus on using peptides thoughtfully and in the