Kisspeptin (also known as metastin) is a naturally occurring neuroendocrine peptide that plays a pivotal role in human reproduction by stimulating gonadotropin-releasing hormone (GnRH) secretion. This small peptide binds to the GPR54 receptor in the hypothalamus, triggering pulsatile GnRH release and downstream secretion of luteinizing hormone (LH) and follicle-stimulating hormone (FSH). Originally identified as a metastasis-suppressor gene product, kisspeptin has become a major focus in reproductive endocrinology. This educational protocol presents a once-daily subcutaneous approach for research use.
