Some bodybuilders and athletes use trenbolone esters for their muscle-building and otherwise performance-enhancing effects.  Such use is illegal in the United States and many other countries. The DEA classifies trenbolone and its esters as Schedule III controlled substances under the Controlled Substances Act .  Trenbolone is classified as a Schedule 4 drug in Canada  and a class C drug with no penalty for personal use or possession in the United Kingdom .  Use or possession of steroids without a prescription is a crime in Australia . 
Regarding their quality has to be said that only Winstrol can be found in all three sources: Human grade pharmaceuticals, veterinarian grade and underground. When it comes to Tren or Equipoise you will have to choose between underground labs and veterinary grade pharmaceuticals. Since the quality of underground labs are quite low, a wiser decision would be to choose a vet grade Tren or Equipoise. For this, you will have to buy a bottle of Equipoise and another one of Fna-Palettes that would have to carefully convert into Trenbolone acetate. If you decide to go this way, than be very careful to sanitary conditions and strictly follow the right doses when mixing.
Animals were allocated to the study in two groups. The first five weight blocks were allocated on October 7, 1996, and the last five weight blocks were allocated on October 10, 1996. The animals in each experimental group in a weight block were housed in separate pens. Each pen of 12 animals was an experimental unit, and each group of six pens (one from each experimental group) constituted a weight block. A total of 720 animals were allocated to the study.