GHRP-2 (Growth Hormone–Releasing Peptide-2) is widely studied in peptide research for its strong affinity to the ghrelin (GHS-R1a) receptor and its capacity to stimulate endogenous growth hormone release. In laboratory investigations, this activity allows researchers to explore downstream hormonal cascades involving IGF-1 signaling, metabolic regulation, and cellular energy homeostasis. These characteristics make GHRP-2 a valuable research compound for examining endocrine-driven communication between central and peripheral biological systems.