The problem is that steroids are designer drugs; ie, whenever one is discovered - another one is designed. Actually, the designers are usually one or two steps ahead of the detection.
One thing I don't understand is why any/all drugs don't leave a trail. Its just proving what that trail is, documenting it and then making its use illegal. If this is the case, why can't they say it is prima facia evidence that someone was doing something?
I don't care either way, just have a fair playing field. I do understand that it is bad for kids and makes players over aggressive (er, code word for arrogant a**holes, oh, they are already that anyway
).