Leptin is a hormone predominantly made by adipose cells that helps to regulate energy balance by inhibiting hunger.
Useful for the evaluation of hypogonadism and oligoamenorrhea in females. Also used for monitoring low-dose female hormone replacement therapy in postmenopausal women
Elevations of androstenedione are associated with abnormal hair growth (hirsutism) and virilization.
Estriol is the estrogen that is produced in significant amounts during pregnancy, and it has potential protective properties against the production of cancerous cells. Levels of estriol in non-pregnant women do not change much after menopause, and levels are not appreciably different from levels in men.