Once you suspect that you may be suffering from infertility, the vast majority of people will take the initiative to go to the hospital for relevant tests. In the face of a variety of screening tests, you are eager to know the cause of the disease, do you understand the significance of the relevant tests? Today, let’s learn about the significance of the various indicators of the “sex hormone test”. Prolactin PRL, also known as prolactin, the measurement of PRL concentration helps to diagnose hypothalamus and pituitary dysfunction, pituitary tumors can cause hyperprolactinemia, and sometimes associated with male impotence, high PRL levels are generally associated with breast milk and amenorrhea, and menstruation can be restored to normal after the decrease of PRL by drug treatment. Luteinizing hormone abbreviated as LH, when suffering from hypogonadism, primary testicular failure and fine tube hypoplasia, renal failure, cirrhosis, hyperthyroidism and other diseases when the concentration of its rise. Insufficient secretion of anterior pituitary hormones can cause a decrease in LH levels, and low LH levels in both men and women can lead to infertility. Low LH values can indicate certain dysfunctions of the pituitary gland or hypothalamus. In the differential diagnosis of hypothalamic, pituitary or gonadal dysfunction, LH concentration is routinely measured, and is measured together with FSH. In addition, LH is used to determine menopause, the timing of ovulation, and to monitor endocrine therapy. Estradiol, or E2, is a useful indicator of various menstrual abnormalities. These include early or delayed puberty in girls, primary or secondary amenorrhea, and premature ovarian failure. E2 is also elevated in men with feminization syndrome, breast feminization, and testicular cancer. Identification and monitoring of serum E2 in infertile patients is useful for monitoring ovulation induction and subsequent treatment. In in vitro fertilization (IVF), where ovarian hyperstimulation is performed, the use of chorionic gonadotropin and the collection of oocytes are usually optimally adjusted on a daily basis, and E2 concentrations also need to be measured. Testosterone Measurement of serum Testo in men is helpful in the diagnosis of testicular dysfunction. In women, serum Testo is useful in the evaluation of hirsutism, alopecia and menstrual abnormalities. Follicle Stimulating Hormone Abbreviated FSH, also known as follicle-producing hormone, FSH and LH are closely associated with the growth of gonadal tissues and the control of reproductive activity FSH is elevated during menopause, after oophorectomy, and in the presence of precocious ovarian failure Abnormal associations between FSH and LH, and between FSH and estrogens, have been associated with anorexia nervosa and polycystic ovarian disease Ovarian failure is indicated if randomly measured FSH concentrations exceed 40 miu/ml. The growth of the vas deferens and maintenance of sperm production in men is often regulated by FSH, and FSH levels are usually elevated in men with azoospermia and oligospermia. Elevated FSH is also seen in primary testicular failure and fine-tube hypoplasia (i.e., klinefelter’s syndrome), starvation, renal failure, hyperthyroidism, and cirrhosis of the liver, and testicular tumors generally have reduced FSH concentrations. Progesterone Its concentration is measured to determine the presence or absence of ovulation and luteal function in infertile women.