fsh should be FSH, which is usually referred to as follicle stimulating hormone in clinical practice. FSH stands for Follicle Stimulating Hormone, a hormone secreted by the pituitary gland that is chemically a glycoprotein, and Follicle Stimulating Hormone is a type of gonadotropin.The primary role of FSH is to promote follicular maturation. The more established follicular theory is the FSH threshold theory. The minimum blood concentration of FSH required for a follicle to grow and develop, and the level of FSH that rises during the follicular phase to a concentration that allows a follicle to grow and develop into a dominant follicle, is known as the threshold for FSH. In clinical practice, it is generally used to artificially induce ovulation, by adjusting the starting dose and maintenance time of FSH to control the number of follicles that develop and mature; it is also possible to negatively regulate the reduction of FSH through the administration of estrogen and progesterone, which can be used to achieve contraception. If patients have FSH hormone abnormalities, they can promptly go to the hospital reproductive department, obstetrics and gynecology or endocrinology and other related departments to consult and actively diagnose and treat.