Nandrolone

Nandrolone is an anabolic steroid occurring naturally in the human body, albeit in small quantities. Nandrolone is most commonly sold commercially as its decanoate ester, Deca-Durabolin,and, less commonly, as a phenylpropionate ester, Durabolin. Nandrolone use is indirectly detectable in urine tests by testing for the presence of 19-norandrosterone, a metabolism product of this molecule. The International Olympic Committee has set a limit of 2 nanograms per millilitre of urine as the upper limit, beyond which an athlete is suspected of doping.

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Anabolic steroid: Anabolic steroids are a class of natural and synthetic steroid hormones that promote cell growth and division, resulting in growth of muscle tissue and sometimes bone size and strength. Testosterone is the best known natural anabolic steroid, as well as the best known natural androgen....

Human body: The human body is the entire structure of a human organism, and consists of a head, neck, torso, two arms and two legs....

Urine: Urine is liquid waste excreted by the kidneys and eventually expelled from the body in a process known as urination. Most commonly the excretion of urine serves for flushing waste molecules collected from the blood by the kidneys, and for the homeostasis of the body liquids; however, many species al...