Few more details.
http://www.nydailynews.com/sports/ba...ticle-1.990020
The test result for testosterone was "insanely high", twice the level of anyone else who has ever failed the test in the entire history of that test. Not just among baseball players, but from anyone that they knew about who ever took that test in the world.
Aside from pointing at the insanely-high result as an indication that the test result in this case could be flawed, Braun's people are also going to argue that there were chain-of-custody issues with the samples.