IGF-1 LR3 is an 83-amino-acid analog of insulin-like growth factor-1 in which the first three residues are replaced by arginine and the C-terminus is extended, markedly reducing affinity for IGF-binding proteins and prolonging receptor activation. This modified profile makes it a standard tool in muscle-growth, differentiation and metabolic signaling research. It is supplied as a white lyophilized powder at verified purity in sealed vials with batch traceability. Each batch is released only after peptide-content verification and purity assessment, and the corresponding records are retained for future reference. For projects requiring independent confirmation, we can arrange third-party analytical testing and share the results before shipment on request.

IGF-1 LR3 exhibits enhanced bioactivity compared to native IGF-1, with a longer half-life that allows for less frequent dosing in experimental settings. Its ability to stimulate muscle protein synthesis, promote cell proliferation, and modulate metabolic pathways has made it invaluable in studies exploring conditions such as muscle wasting, osteoporosis, and neurodegenerative diseases. The lyophilized form ensures stability during storage and shipping, with reconstitution typically performed in sterile water or a suitable buffer to achieve the desired concentration for experimentation. Detailed reconstitution instructions and handling guidelines are provided with each shipment to ensure optimal peptide integrity and experimental reproducibility. Additionally, our quality control processes include rigorous testing for endotoxin levels, ensuring that the product meets strict standards for biological safety and efficacy. Researchers can rely on consistent batch-to-batch performance, enabling long-term studies and comparative experiments with confidence. For specialized applications, custom formulations and packaging options are available upon request, further supporting the diverse needs of academic and industrial research laboratories.