luteinizing hormone

Luteinizing hormone (LH) is a gonadotropin hormone secreted by the anterior pituitary gland under the control of gonadotrophin-releasing hormone (GnRH) from the hypothalamus. In females, LH triggers ovulation and stimulates the ovaries to produce progesterone and estrogen. In males, LH acts on the Leydig cells of the testes to stimulate the production of testosterone, which is necessary for sperm production and male sexual development. LH levels normally fluctuate during the menstrual cycle and puberty. Abnormal LH levels may be associated with infertility, menstrual disorders, polycystic ovary syndrome (PCOS), pituitary disorders, delayed puberty, or hypogonadism. Blood tests measuring LH are commonly used to evaluate reproductive and endocrine function.

Luteinizing hormone (LH) is a hormone that helps control the reproductive system. In females, it helps release an egg from the ovary during ovulation. In males, it helps the testes produce testosterone.

• Also called LH • Hormone produced by the anterior pituitary gland • Controlled by gonadotrophin-releasing hormone (GnRH) • In females, LH triggers ovulation and supports estrogen and progesterone production • In males, LH stimulates testosterone production in the testes • Important for fertility, puberty, and reproductive health • Abnormal LH levels may occur in infertility, PCOS, pituitary disorders, delayed puberty, or hypogonadism • LH blood tests are commonly used to evaluate reproductive hormone function