"A more recent test showed a substantial amount of someone else’s DNA in the urine sample."
Well, that's just basic sample handling. If you're jacking up this point, the whole system needs to be reviewed. The entire point of having UAs is individualized testing, otherwise you may as well just have the whole unit piss in a jug and test it. If this happened in a civilian court, the guy would walk free and then sue the local government. Now, I get it, the Army doesn't work that way - but it's standards are always supposed to be at least that of the local system, right? Isn't that what they always tell us? OSHA PLUS a bit more, Joint Commission PLUs a bit more? So why are our lab techs sticking their fingers in people's urine? Just additional evidence that the way we drug test is an enormous waste of time and resources, not because of the concept necessarily but because the Army can't get the process right.