Kisspeptin is a neuropeptide encoded by the Kiss1 gene that acts as an endogenous ligand for the GPR54 (KISS1R) receptor. It is recognized as a key upstream regulator of hypothalamic gonadotropin-releasing hormone (GnRH) neurons and is investigated as a central conduit linking metabolic and endocrine signals to reproductive axis activity. Principal research areas include puberty onset, reproductive endocrinology, hypothalamic-pituitary-gonadal axis signaling, and neuroendocrine regulation. Supplied as a lyophilized research material for laboratory research applications.