Luteinizing hormone is a glycoprotein hormone secreted by pituitary cells and regulated by ovarian sex hormones and inhibin. The physiological effects of luteinizing hormone include stimulating the synthesis of androgens in follicular membrane cells during the follicular phase, providing a substrate for the synthesis of estradiol, inducing the final maturation of the oocyte and ovulation prior to ovulation, and maintaining luteal function during the luteal phase by promoting the synthesis and secretion of progesterone, estradiol, and inhibin A. The normal values of luteinizing hormone in women are 2.12-10.89 mlU/ml in the follicular phase, 19.18-103.03 mlU/ml in the ovulatory phase, 1.2-12.86 mlU/ml in the luteal phase, and 10.87-58.64 mlU/ml in the menopausal phase. If the test reveals abnormalities in luteinizing hormone, it is recommended to consult a gynecology clinic.