Unfortunately there exists no test that can determine a bodybuilder's detailed drug use in the far past, and doping test results are very easy to manipulate . Therefore, if you really want to know whether a bodybuilder is true natural, or which drugs he has been using to build his physique, you will have to ask him. The standard answer to this question is, however, always "No, I have never used any drugs". However, if you get to know the guy better, develop some friendship, give him some complements on his physique, and especially if he thinks that you are a drug user yourself or interested in becoming one, he might well loosen up and start telling you at least part of his true story.
When you are supplementing with bodybuilding steroids of a testosterone nature you will find they come in many ester based forms but in the end each one is simply testosterone. The common belief is that short ester forms such as Testosterone-Propionate will cause you to hold much less water and this can be true to a slight extent in some people but by-in-large the only reason one is holding less water is because he’s dieting and taking in fewer carbohydrates. You can just as easily end up ripped to the bone, completely shredded with long ester based forms such as Testosterone-Cypionate or Testosterone-Enanthate; in the end, it’s all testosterone.