“…Two such steroids used as growth promoters in meat producing animals are 19-nortestosterone and methyltestosterone. 19-Nortestosterone (17-hydroxyestr-4-en-3-one, 17-19-nortestosterone, also named nandrolone) is a C 18 anabolic steroid hormone, which differs from testosterone in that it does not possess a C-19 methyl group [8]. 19-Nortestosterone has been used as a growth promoting agent to accelerate weight gain and improve feeding efficiency in animals [9].…”