Hormone six can be checked during menstruation, the follicles inside the ovaries have not yet developed during menstruation, which can best reflect the basic state of the ovaries, so it is more effective in detecting follicle-stimulating hormone, luteinizing hormone, estrogen and prolactin. Try not to eat before the test, so as not to affect the test results. In addition, the prolactin in a woman’s body is affected by many factors, such as sex life, exercise, diet, etc. Therefore, if the prolactin is too high in one checkup, you can check it again after a period of time. Progesterone is best checked on the 22nd-24th day of menstruation because this is the time when the level of progesterone in a woman’s body is higher and best reflects the status of progesterone.