Testosterone kit, 10000 Tests

Testosterone is a steroid hormone synthesized from 17a-hydroxy progesterone by the enzymes 17,20-lyase and 17ß-hydroxysteroid dehydrogenase in the gonads of both males and females, although small amounts are also secreted by the adrenal glands. It is the principal male sex hormone and an anabolic steroid. It plays an important role in the stimulation and the development of masculine characteristics by its fixation of androgen receptors.