Estrogen VI, which should be sex hormone VI or hormone VI, is best done on the 3rd-5th day after menstruation for women, with a blood test at 9 am on an empty stomach, and for men with a regular life, with an empty stomach at 8-11 am at any time. Some women do not have menstruation for a long time, due to the endocrine hormone disorder there is no way to restore normal menstruation, at this time there is no time limit, you can not have blood test during menstruation. The six commonly used sex hormone tests, namely folliculogenic hormone (FSH), luteinizing hormone (LH), estradiol (E2), progesterone (P), testosterone (T), and prolactin (PRL), can determine whether a woman is suffering from an endocrine disorder based on the test results, and can also determine the treatment based on the test results. The sex hormone test is usually required for women with menstrual cycle disorders, amenorrhea, abnormal bleeding from the reproductive tract, and gynecological-related tumors, and for men with abnormal semen, impotence, and hormone-related tumors. You should not eat any food after 22:00 pm the night before the hormone six test, and you should not drink water before the test, and you need to sit still for half an hour before drawing blood for the test.