Sex hormone tests, which are often referred to as hormone levels related to the reproductive system, are required for many patients with discomfort, but most patients are often confused about when to have the test and how to read the test results. Sometimes they are confused and take the initiative to have this test done, and more often than not, they are overwhelmed when the results come out. Today, I will give a brief introduction to some common questions about sex hormones, hoping to help you understand your body. FSH, Chinese name: follicle stimulating hormone, follicle stimulating hormone. Functions: Promotes spermatogenesis (the final stage of spermatogenesis, secondary spermatocytes – sperm cells, spermatozoa); stimulates the development of supporting cells? Secretion of SHBG ? High concentration of androgens; acts on supporting cells to secrete INHIBIN. normal values: TrFIA: 1-10.5 U/L in adults, <2.0 U/L in prepubertal, CLIA: 5-20 U/L, ECLIA: 1.5-12.4 U/L. significance: assessment of infertility diagnosis and treatment. LH, Chinese name: luteinizing hormone, luteinizing stimulating hormone. Function: Stimulates testosterone production by testicular interstitial cells. Normal values: mU/ml , U/L. TrFIA: 1.8-8.4 U/L, CLIA: 5-20 U/L, ECLIA: 1.7-8.6 U/L. Significance: Evaluation of infertility diagnosis and treatment, evaluation of gonadal hypogonadism diagnosis and treatment. PRL, Chinese name: prolactin, lactogen. Function: Sexual function, synergistic with testosterone, promotes the growth of prostate and seminal vesicles, enhances the action of LH on testicular interstitial cells, promotes the synthesis of testosterone. Significance: Sexual dysfunction, pituitary tumors. E2, Chinese name: estradiol. Function: Normal values: TrFIA: 0-0.13nmo/L , CLIA: 0.19-0.24nmol/L, ECLIA: 0.05-0.22nmol/L. Significance: obesity, smoking, testicular or liver tumors, azoospermia or oligospermia therapeutic target. T, Chinese name: testosterone. Characteristics: 95% testicular interstitial cells secretion, 5% adrenal cortex, testosterone decreases after 40 years of age. Normal values: TrFIA: 8.7-33nmo/L , CLIA: 9.4-37nmol/L, ECLIA: 9.9-27.8nmol/L in adults , 0.42-38.5nmol/L in children. significance: tumor, infertility, hypogonadism.