Mod GRF 1-29 is a modified version of the GHRH 1-29 fragment carrying four amino-acid substitutions that improve stability against dipeptidyl peptidase degradation, extending its half-life in experimental systems. Researchers use it to deliver sustained GHRH-receptor stimulation in GH-axis studies with reduced dosing frequency. This product is a white lyophilized powder at >=99% HPLC purity in a sealed vial. We supply full quality records, flexible pack sizes and reliable cold-chain shipping for long-term studies. All items are dispatched in plain, discreet packaging to protect buyer privacy, and high-value orders may be split into multiple parcels for customs safety. Delivery times to most destinations range from a few days to two weeks depending on the region and courier selected.