The level of sex hormones affects the physiological and reproductive functions of the body. The 6 sex hormones include: folliculopoietin, luteinizing hormone, estrogen, progesterone, testosterone, estradiol and lactogen. Precautions when measuring sex hormones are as follows: 1. Fasting, preferably before 9 o’clock in the morning; 2. Women should have their sex hormones measured 3-5 days after their menstrual period, but if they have irregular menstruation or amenorrhea, they can come for testing at any time; 3. It is best to stop using hormonal oral medications, such as birth control pills, before testing sex hormones. For male sex hormone test, it is better to avoid strenuous exercise and check on an empty stomach.