The Atlas LH ELISA Kit allows quantitative measurement of luteinizing hormone (LH) in human serum. LH, a key gonadotropin, regulates ovarian follicle development, ovulation, and testosterone production in men. Measurement of LH, in conjunction with FSH, supports the diagnosis and monitoring of reproductive and endocrine disorders, including polycystic ovary syndrome, amenorrhea, menopausal syndrome, and male gonadal dysfunction.