Clinical significance of determination of Follicle stimulating hormone

　　1. Follicle stimulating hormone increased:

　　Primary ovarian dysfunction, ovarian ovulation disorders;

　　(2) early hypophysis, complete precocious puberty, primary infertility, after treatment with corticosteroids;

　　(3) male infertility, testicular seminoma, primary or secondary amenorrhea, galactophore amenorrhea;

　　Pituitary FSH tumor, ectopic hormone secretion syndrome, Turner syndrome.

　　2. Follicle stimulating hormone reduced:

　　Hypophysis or hypothalamic hypogonadism, adenohypophysis, sheehan syndrome, menstrual disorders, endometriosis;

　　(2) progesterone and estrogen therapy.

　　3. The measurement of Follicle stimulating hormone and LH peaks in the menstrual cycle or urine can accurately judge the ovulation period, so as to determine the most timely period of fertilization. Significant FSH peaks can be seen before ovulation, and the measurement of changes in FSH can help identify amenorrhea in the ovary, pituitary gland or hypothalamus.

　　4. Male sexual dysfunction and delayed puberty. In male patients with other systemic diseases, blood testosterone was decreased without the increase of FSH, indicating that the function of the hypothalamic-pituitary-gonadal axis was inhibited in severe diseases.