Might seem like an obvious question but I haven't seen really too many explanations.
Logic dictates that the 'designer steroid' expensive route isn't particularly affordable for many athletes. It also explains why JJ and Anderson can fail, and the other athletes such as the ladies with massive traps and micropenises pass regularly (and they'd be earning far less).
Therefore the solution has to be something else.
I presume that it has something to do with the test timings. Either there's a bit of corruption where people are notified in advance, or you simply 'know' that there are windows of a few hours where you can take small doses of things that won't show up.
I imagine there's a huge network of peope involved. From what I understand from friends of mine that train, the training partners who take things aren't particularly secretive about it, so the solution lies not in 'whether they are taking' but 'how they are passing'.
So in a nutshell, what is the methodology that they use for passing, as I can't see any info, and have JJ and Anderson simply f'ed up on the timing or dosage due to simple error?