Estradiol ELISA kits are assays designed to detect the steroid hormone estradiol. Belonging to the oestrogen class of hormones, it functions as the primary female sex hormone, involved in the development of secondary sexual characteristics and the menstrual cycle. It is produced from cholesterol in the ovaries, testicles, adrenal glands and brain. Estradiol can be taken as a synthetic medication for hormone therapy. Visit the supplier page for more information about detection range and reactivity.