LH

LH, or luteinizing hormone, is a hormone produced by the pituitary gland that regulates key reproductive functions in both men and women.

The LH Test measures luteinizing hormone levels in blood to assess fertility, reproductive health, and endocrine function. Abnormal LH may indicate infertility, menstrual irregularities, menopause, or pituitary disorders in women, and low testosterone or testicular dysfunction in men. Doctors use this test to evaluate ovulation, investigate infertility, monitor puberty disorders, or guide hormone therapy. It provides key insight into reproductive and hormonal balance.