Luteinizing hormone LH

Luteinizing hormone is a hormone produced by the pituitary gland. In men, it stimulates the secretion of male hormones by Leydig cells, and stimulates the ovaries to secrete female estrogen in women. Luteinizing hormone (LH) is secreted by pituitary basophils. In women (LH) and FSH work together to maintain the ovarian menstrual cycle, leading to ovulation and corpus luteum formation. The production of LH is controlled by the hypothalamic gonadotropin releasing hormone, and is regulated by positive and negative feedback of the ovary. LH combined with FSH, the primary identification of primary (ovarian) or secondary (pituitary) amenorrhea in women; in males to identify primary or secondary testicular dysfunction; at the same time can identify the true nature of prepubertal children Or pseudo precocious. Basic Information Specialist classification: growth and development examination classification: blood examination Applicable gender: whether men and women apply fasting: fasting Analysis results: Below normal: More common in the hypothalamus - pituitary gonadotropin function. Normal value: Male: 1.5-9.3 IU/L Female follicular phase: 1.912.5 IU/L Female ovulation period: 8.7-76.3IU/L Female luteal phase: 0.5-16.9IU/L Female menopause: 15.9-54 IU / L Pregnancy: 0-1 IU / L Above normal: More common in polycystic ovary syndrome. negative: Positive: Tips: Menstruating women should not do this check. Normal value LH value reference range (unit: IU/L) Male: 1.5-9.3. Female: follicular phase 1.91.2.5. The ovulation period is 8.7-76.3. The luteal phase is 0.5-16.9. Menopause - 0-1 during pregnancy. Clinical significance Abnormal result 1, LH levels increased in polycystic ovary syndrome (continuous anovulation and excessive androgen, etc.), TUYN-ER syndrome, primary hypogonadism, premature ovarian failure, oophorectomy; menopausal syndrome or menopause Women. 2, LH levels are reduced in the hypothalamus - pituitary gonadotropin function, the following hypothalamic amenorrhea; long-term use of contraceptives; LH and FSH can be decreased after hormone replacement therapy. People who need to be checked Middle-aged women, menopausal women. Low results may be diseases: Xi'an syndrome, pediatric androgen insensitivity syndrome results may be high disease: amenorrhea after contraception, polycystic ovary syndrome, peri-menopausal syndrome precautions Taboo before the test: Do not eat too greasy, high-protein foods the day before the test, to avoid heavy drinking. Requirements for examination: relax and actively cooperate with the doctor's examination. Inspection process Vascular blood collection was used for testing. Before venous blood collection, carefully check that the needle is securely installed and that there is air and moisture in the syringe. The needle used should be sharp, smooth, ventilated, and the syringe should not leak. Firstly, the skin was disinfected from the inside to the outside and clockwise from the selected venipuncture with a 30g/L iodine swab. After the iodine was volatilized, the iodized trace was wiped out in the same way with a 75% ethanol swab. Fix the lower end of the venipuncture site with the thumb of the left hand, hold the syringe syringe with the thumb and middle finger of the right hand, and fix the needle lower seat with the index finger, so that the bevel of the needle and the scale of the syringe are upward, and the needle is inclined along the vein to make the needle and the skin obliquely penetrate the skin at an angle of 30°. Then, through the vein wall, enter the venous cavity forward at an angle of 5°. After seeing the blood return, the needle will be probed into the spot to avoid the needle slipping out when the blood is collected; but it is not possible to use a deep puncture to avoid hematoma, and immediately remove the cuff. Needle plug can only be pumped out, can not be pushed in, so as to avoid injecting air into the vein to form a gas plug, causing serious consequences. Remove the syringe needle and slowly inject the blood into the anticoagulation tube along the tube wall to prevent hemolysis and foam. Separate serum tests. Not suitable for the crowd Menstruating women. Adverse reactions and risks 1, subcutaneous hemorrhage: due to pressing time less than 5 minutes or blood draw technology is not enough, etc. can cause subcutaneous bleeding. 2, discomfort: the puncture site may appear pain, swelling, tenderness, subcutaneous ecchymosis visible to the naked eye. 3, dizzy or fainting: in the blood draw, due to emotional overstress, fear, reflex caused by vagus nerve excitement, blood pressure decreased, etc. caused by insufficient blood supply to the brain caused by fainting or dizziness. 4. Risk of infection: If you use an unclean needle, you may be at risk of infection.