LH isn’t a measurement that your healthcare provider uses to confirm pregnancy. You should ask your healthcare provider if your LH level is playing a role in your ability to get pregnant. Ask your healthcare provider what your test results mean for you. LH signals your ovaries or testes to make the hormones needed to start and maintain reproductive processes. Your hypothalamus secretes a hormone called gonadotropin-releasing hormone (GnRH) that signals your pituitary gland to secrete LH. LH is part of a complex communication network that involves your brain (hypothalamus and pituitary gland) and your sex organs (ovaries and testes). These hormones cause changes related to sexual development. Towards the middle of the cycle, estradiol levels peak, which causes the LH surge. In the first half of the cycle, LH acts on the maturing follicle, resulting in the production of estradiol. In women, LH has many functions throughout the menstrual cycle. As an online urgent care and primary care practice, we are dedicated to supporting you at every step of your health journey. For example, in females, estrogen affects levels of FSH release in different ways. However, different amounts of some hormones in this system affect the release of other hormones differently. In return, hormones that your testes or ovaries release control the amount of GnRH your hypothalamus makes, starting the cycle over again. In collaboration with testosterone inside the testes, which is triggered by LH, FSH also sustains sperm production. Abnormal LH levels can also point to underlying conditions such as PCOS, hypothalamic amenorrhea, or premature ovarian failure. Its primary function is to regulate key processes in the reproductive system, making it a critical marker for diagnosing and managing various health conditions. Despite its small size, LH has a profound impact on reproductive health and overall hormonal balance. It is produced and released by the anterior pituitary gland in response to signals from the hypothalamus, another essential part of the brain. Learn more about symptoms, diagnosis, and treatment of low testosterone by clicking here Luteinizing hormone levels tend to be relatively stable in men throughout the day, with minor fluctuations. This review examines the pathways through which LH regulates testosterone production, LC proliferation, differentiation, and circadian rhythm in human and non-human species. Your provider is there to support you in all aspects of your health. If symptoms of low testosterone are interfering with your quality of life, know that you don’t have to just grin and bear it. If you stop TRT, you’ll return to your normal level of testosterone. If you stop taking testosterone, your levels will return to baseline.