Grade: Best Igf 1 Lr3 Igf Des Insulin Like Growth Factor, Purity: 100, Packaging Size: Box at 16299 box in Gurugram IGF 1 LR3 for Fetal Growth Restriction Children's Hospital Colorado Cell proliferation bioactivity of purified IGF 1 LR3 IGF 1. (A) Download Scientific Diagram What is IGF 1 LR3?, Insulin Like Growth Factor 1 Long R3 (IGF 1 LR3) is a modified version of IGF 1 with a longer half life, making it significantly more potent and effective for muscle growth, IGF 1: Miracle Hormone or Health Hazard? Diet vs Disease IGF 1 LR3: Nasal Spray vs. Subcutaneous Injection Comparison