60 ml? shit...I pissed like 10 ml one time and they took it, I dont know where I heard that thing about the pissing but some kids at a drug rehab I knew used to do that and some of them said it helped a little, my piss is darker when it first comes out sometimes so I figured maybe there was some truth to the tale..but prob not. If your dirty then I would try and take some detox or avoid the test at all costs, its that simple.