Normal LH levels in females range from 2–15 mIU/mL, spiking to 20–100 mIU/mL during the LH surge before ovulation. Learn what high or low LH means for your fertility. Luteinizing hormone (LH) helps regulate important functions of your reproductive system like menstruation, puberty and sexual development. This article explores the uses of LH tests. It discusses high, low, and normal LH levels, as well as what they mean and how they relate to pregnancy. Check the status of Lufthansa flights including arrivals and departures. Stay informed and receive updates directly to your mobile phone. Check your flight now! A luteinizing hormone test measures how much luteinizing hormone (LH) is in your blood. LH helps your reproductive system: specifically, a woman’s ovaries and a man’s testes. This disambiguation page lists articles associated with the title LH. If an internal link incorrectly led you here, you may wish to change the link to point directly to the intended article. This test measures the level of luteinizing hormone (LH) in your blood or urine (pee). LH affects sexual development in children and fertility in adults. Learn more. Luteinizing hormone (LH, also known as luteinising hormone, [1] lutropin and sometimes lutrophin[2]) is a hormone produced by gonadotropic cells in the anterior pituitary gland. The production of LH is regulated by gonadotropin-releasing hormone (GnRH) from the hypothalamus. [3] Experience premium service and comfort worldwide with Lufthansa ️. Discover top offers and start your journey today! Leuteinizing hormone, also known as LH, plays a critical role in human reproductive health and fertility for both men and women. This comprehensive guide covers normal LH levels, the significance of the LH/FSH ratio in diagnosing PCOS, preparation for blood tests, and how this hormone regulates.