RUO Recombinant Human IGF 1 LR3 Protein This Peptide Is Next Level for Growth & Recovery Meet IGF LR3 the long acting insulin like growth factor that researchers can't stop talking about. From muscle growth to cellular repair , Buy IGF 1 LR3 for Sale ( Insulin Growth Factor 1 ) from Melanotan Express 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, algorx