Every player who attends the Scouting Combine must submit to drug testing. With two of the players who were tested at the Scouting Combine in 2017 generating positive tests via diluted samples, there’s an important point to keep in mind when deciding whether the explanation for the failed drug test passes the smell test.
The samples are collected very early in the morning, with the players often getting the “wakey wakey” business before doing their business into a cup. So the diluted samples either resulted from a player drinking huge amounts of water before going to be and then: (1) failing asleep with a rapidly-filling bladder; and (2) sleeping through the night with a very full bladder, or from a guy waking up early and drinking copious amounts of water in order to ensure that certain substances won’t be detected in the sample.
The statement issued on behalf of former Michigan defensive back Jabrill Peppers accounts for this dynamic by pointing out that the player “was being pumped with fluids, drinking 8-10 bottles of water before he went to bed, because he was the first guy to work out two days for the LBs and DBs.”
Is it possible he actually drank that much water before going to sleep, fell asleep with that much water in his system, and slept through the night without having to get up to unload most of the 8-10 bottles of water before proving a sample that wasn’t dilute? Sure. But it’s also possible that Foster, Peppers, and anyone else who generated a test sufficiently dilute to be regarded as an effort to beat the test deliberately ingested extra water to ensure that any banned substances would be undetectable in a sample of urine that had been overloaded with water.
http://profootballtalk.nbcsports.co...sessing-credibility-of-diluted-sample-excuse/
The real dilemma is you are already in the NFL program so the next problem it games lost... with Tunsil at least it was prior and as far as we know he was never required for extra monitoring or given strike one.. its going to be different for Peppers and Foster. Teams will have to weigh the risk..