. Luteinizing Hormone (LH) is a hormone produced by the pituitary gland.
. In women, LH works alongside FSH to regulate the menstrual cycle and ovulation. A surge in LH levels triggers ovulation, the release of an egg from the ovary. LH testing is commonly used to evaluate ovarian function, diagnose infertility issues, and assess ovulation in women trying to conceive.
. In men, LH stimulates the testes to produce testosterone, which is essential for sperm production. The LH test is used to evaluate testicular function and to diagnose hypogonadism or infertility in men.
. Abnormal LH levels can indicate issues such as PCOS, premature ovarian failure, pituitary disorders, and gonadal dysfunction.