When you have symptoms such as menstrual disorders, irregular ovulation, recurrent miscarriage or endocrine disorders, your doctor may perform reproductive hormone tests, including follicle production hormone (FSH), luteinizing hormone (LH), estradiol (E2), progesterone (P), testosterone (T) and prolactin (PRL), and sometimes thyroid hormone tests. However, the interpretation of hormone test sheets is more than simply comparing reference values and requires specialized knowledge of reproductive endocrinology. This section focuses on the interpretation of hormone test sheets when assessing ovarian function. Basal endocrine levels are usually checked on the second to third day of the menstrual cycle. For patients with scanty menstruation or who have been amenorrheic for 3-6 months, if ultrasound indicates endometrial thickness <5 mm and follicles <10 mm, they can also be used as basal status. basal values of FSH and LH are 5-10 IU/L. (1) Ovarian failure: basal FSH 40 IU/L, elevated LH or 40 IU/L. Occurs before the age of 40 and is called premature ovarian failure (POF) (2) Dysfunctional ovarian reserve (DOR): basal FSH/LH 2 to 3.6 IU/L (FSH can be in the normal range) is an early manifestation of ovarian dysfunction and often suggests that the patient is not responding well to superovulation (COH). (3) Low Gn amenorrhea: basal FSH and LH are both 5 IU/L. Differentiation between hypothalamic or pituitary hypofunction requires the gonadotropin-releasing hormone (GnRH) test. (4) Polycystic ovary syndrome (PCOS): Basal LH/FSH2-3 can be used as the main indicator for the diagnosis of PCOS. A basal LH level of 10 IU/L is considered elevated, or LH is maintained at a normal level and basal FSH is relatively low, resulting in an elevated LH to FSH ratio. (4) Premature ovarian failure occult stage: 2 examinations of basal FSH > 20 IU/L suggest possible amenorrhea after 1 year.