LH
Luteinizing hormone or lutropin (LH) is a glycoprotein secreted by the gonadotropic cells of the anterior pituitary. LH stimulates testosterone secretion by the Leydig cells of the testes and ovulation and development of the corpus luteum. The determination of LH can be used for the assessment of fertility status and sexual development. It can be used in differential diagnosis of primary and secondary hypogonadism in both males and females. In females, it can be used also in differential diagnosis of amenorrhea, PCOS and other causes of infertility. It can be also used as an aid in diagnosis of precocious and delayed puberty in children.