The LH test evaluates reproductive health and helps diagnose conditions related to hormonal imbalances. Elevated LH levels in women may be associated with conditions such as PCOS or menopause, which can cause symptoms like irregular periods or hot flashes. Low LH levels might indicate issues with the pituitary or hypothalamus. In men, high LH levels can suggest primary testicular failure, whereas low levels might point to secondary causes such as pituitary dysfunction. This test is essential for evaluating fertility, menstrual irregularities, and reproductive disorders.