The sex hormone 6 test is a commonly used clinical test to check for female endocrine disorders. So what is the sex hormone test? What is the purpose of the sex hormone test? The six female sex hormone tests, namely folliculogenic hormone FSH, luteinizing hormone LH, estradiol E2, progesterone P, testosterone T, and prolactin PRL, basically satisfy clinicians’ screening for endocrine disorders and general understanding of physiological functions. Menstruation is an important physiological aspect of a woman’s life, which reflects the process of development, maturation and decline of the function of the hypothalamic-pituitary-ovarian axis. The occurrence and cyclic changes of normal menstruation are regulated by ovarian cyclic changes, i.e., FSH and LH are maintained at low levels during the follicular phase, E is gradually increased with follicular developmental secretion, and P is only trace. During ovulation, FSH and LH are secreted in a low peak pattern 24 hours before ovulation, and LH is secreted in a steep peak pattern, while E appears slightly earlier than FSH and LH and is also secreted in a peak pattern, and both FSH and LH drop abruptly at ovulation. During the luteal phase, FSH and LH remain at low levels and E and P secretion increases gradually with the development of the corpus luteum, reaching a maximum value 7-8 days after ovulation and then falling back. Before menstruation, FSH, LH, E and P all drop to their lowest values and gradually recover after menstruation to continue the next cycle.