How long does clonazepam- (and other benzos if you know the detection time) last in your urine. More specifically- what about a one time larger dose of 2-6 mg . I know the answer is somewhere in the range of 3 days to a month- but for a skinny person- do you have an estimate that is within a closer range than many state. I know most places don't test for it and it doesn't show up in some tests, but lets pretend we have one that does. What I really want to know is- can a skinny, somewhat active person, in a hypothetical situation, pass a urine screen for clonazepam in 6-7 days. Thanks PR!!!!