The time of estrogen six test needs to be chosen reasonably according to the purpose of the test, mainly for the following purposes: 1, check ovarian function: if the plan is to determine the ovarian function situation, then the test is usually conducted during the menstrual period, or within 8 days of menstruation, which are follicular phase, and can be done for the endocrine six test. It can check the level of estrogen, including the level of FSH (follicle stimulating hormone), to determine ovarian function; 2, check whether ovulation: if the six hormone tests for the purpose of whether ovulation, the time of checking needs to be in the second half of menstruation that is, before menstruation to do the test, mainly to check whether the level of progesterone is elevated, to determine whether ovulation; 3, other tests: in addition to checking the high androgenemia, hyperlactosemia, and any time of the day, and any time of the day, to determine whether ovulation. Other tests: Hyperandrogenemia and hyperprolactinemia can also be checked, and they can be checked at any time.