Glucagon is a 29-amino-acid peptide hormone secreted by pancreatic alpha cells that raises blood glucose by promoting hepatic glycogenolysis and gluconeogenesis, making it a central tool in metabolic research. It is supplied as a high-purity white lyophilized powder, >=99% by HPLC, in sealed vials for laboratory use. Glucagon is investigated in research on glucose counter-regulation, hepatic metabolism, energy balance and glucagon receptor signaling, and is commonly applied in cell-based assays and preclinical metabolic studies. The lyophilized form provides excellent stability and reproducible reconstitution for consistent experimental dosing. Every batch is quality-controlled and batch-specific COA can be supplied on request. Unopened product should be kept sealed at 2-8 degree C away from light and moisture, with -20 degree C recommended for long-term storage. We accept both trial and bulk orders, and OEM and private-label service is available. This peptide is for laboratory research use only, not for human or veterinary purposes.