this is not proof of anything...only the IOC does a complete panel of banned substances. If it is NCAA then your chances of them not testing what you are on is pretty good in some cases (this is because testing for each specific steroid is very expensive). They may have only run a T:E ratio. In fact from talking with alot of former NCAA athletes is seems to be that they have two basic drug testing packages. Power athletes (linemen, shotputters, etc) are likely to get the steroid test, while non power athletes who are tested (i.e, 10k runner) will get the cheaper recreational drug package. The NCAA is so stingy though that they will rarely run both packages...I have heard of several instances where linemen or shotputters smoked weed the day before the test and did not get caught. There is a very good chance your sample was run through the rec drug test or they just did T:E.