Normally, if chorionic gonadotropin is applied, it usually takes about seven days to metabolize. Chorionic gonadotropin is a chorionic gonadotropin extracted from the urine of pregnant women, and is a gonadotropin secreted by placental trophoblast cells. It is somewhat similar to luteinizing hormone, but the effect of follicle stimulating hormone is smaller. It is mainly used in obstetrics and gynecology for ovulation disorders or for ovulation promotion in patients with polycystic ovary syndrome. In addition to clomiphene to promote follicular enlargement in the ovary, chorionic gonadotropin is also used to promote follicular rupture during ovulation promotion. According to the half-life of chorionic gonadotropin, it usually subsides basically in about seven days after stopping the drug and does not affect the blood HCG test. In addition, it should be noted that although the chorionic gonadotropin will basically subside in about seven days, it is recommended that the test be performed about ten days after intercourse, when it will be more accurate.