It all depends, how much body fat you have, do you also consume food products with the substance, how many times you use, and other factors. Drink a ton of cranberry juice, tea, tons of cardio to sweat the toxins out. Everyone is different but about a month is right. You can always get fake pee. LOL! True story. I know a friend that would get his sister to piss in a condom, he'd tie it up, and then tape it to his inner thigh to be used to pass his drug test. It always works for him. I'm not suggesting you do that though.
I have a lot of freedom considering no one tests/checks/asks me about drugs. Been kinda like that since high school with parent, no curfew, no rules, lotta trust/support in whatever. still the freedom every teenager craves and many opportunities to do all kinds of drugs and other inadvisable things, never did any of it. now thinking back, is this even normal? i was so fuking responsible in every aspect of everything. soooo boring!