The LH:FSH ratio test measures the levels of luteinizing hormone (LH) and follicle-stimulating hormone (FSH) in the serum to assess reproductive health and function. This ratio is used to evaluate conditions such as polycystic ovary syndrome (PCOS), hypogonadism, and disorders related to pituitary gland function. An abnormal LH:FSHratio can provide insights into hormonal imbalances and guide further diagnostic and therapeutic interventions.