IGF 1LR3 Grade: Best Igf 1 Lr3 Igf Des Insulin Like Growth Factor, Purity: 100, Packaging Size: Box at 16299 box in Gurugram IGF 1: Miracle Hormone or Health Hazard? Diet vs Disease 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, Recombinant Human LR3 IGF I IGF 1 GMP Protein, CF (8335D GMP) by R&D Systems, Part of Bio Techne IGF 1 LR3: Nasal Spray vs. Subcutaneous Injection Comparison