2Thick, I think you are a little confused about the concept of federalism. A person can be prosecuted either by the federal or the state system. It just depends on which law enforcement personnel bust you. The respective penalties for federal and state offenses differ. So does search and seizure law (the states can grant greater protection to defendants). So when you say "t falls under federal jurisdiction," you are incorrect.
JLuv--Just because you get busted for steroids does not necessarily mean that you will do jail time. What sentence you will receive will depend upon the jurisdiction's sentencing statutes, your past criminal history, your exact charges, the strength of your case, and other related factors. Going to jail is a possiblity but not a certainty.
Taurus, you need to either contact a lawyer in your state, or post in which state you live to see if any of the lawyers on this board could help you. I know New York. And I can help with New Jersey.