The sex hormone 6 test is usually performed on the 2nd-5th day of menstruation and is recommended to be done on an empty stomach from 9-11 am. Men can have the test at any time, just keep the blood drawn on an empty stomach. The six sex hormones, including luteinizing hormone (LH), follicle stimulating hormone (FSH), prolactin (PRL), testosterone (T), progesterone (P) and estradiol (E2), can be used to understand the endocrine condition of the female body. The 2nd-5th day of menstruation is the early follicular phase, where the hormone content is more stable and the test results are more accurate. If a woman’s menstrual cycle is irregular, ultrasound can also be performed to find out the condition of the uterine adnexa and the thickness of the endometrium. If the endometrium is thin and the menstrual cycle is irregular, the hormone level can be checked at any time, and it is recommended that the test be done on an empty stomach between 9 and 11 am. The night before the sex hormone test, you need to pay attention to keep your mood happy, not to stay up late, and to fast from food and water after 12:00 pm to ensure more accurate test results the next day.