Apelin-13 is a 13-amino-acid bioactive peptide that acts as an endogenous ligand of the APJ receptor, regulating cardiovascular function, fluid homeostasis, appetite and metabolic signaling in research models. It is supplied as a high-purity white lyophilized powder at >=99% HPLC purity in sealed vials, offering good stability and easy reconstitution. It is applied in cardiovascular research, heart-failure studies, angiogenesis experiments and cell-based assays on apelin/APJ signaling pathways. Strict quality control is applied to every production batch, and we can supply batch-specific COA documents upon request. Unopened material should be stored sealed at 2-8 degree C in a dry, dark place; for longer storage -20 degree C is advised while avoiding repeated freezing and thawing. We support trial orders and large-volume supply, with OEM and custom private-label options and discreet worldwide shipping available. For research purposes only, not for human or veterinary use.