um the thing about doing meth is there is no quick cleaning system. meth is something that enters the blood stream which means short of going to a medical facility and having your blood run through a machine there is no quick cleaning of it. you will just have to wait it out. how long? that depends on how frequent of a user you are, how long term you have been using for. it builds up in the blood stream and gets stored in the body cells just like for example if you were taking an antidepressant.

in general the half life of one dose of meth is 12-34 hours. what that means is that in 12 -32 hours the amount of meth in a body is cut in half. it takes anywhere from 2 days to 10 days (depending upon ones body metabolism, age, size and weight and kidney/liver functions) for it to fully leave the body. meth can be detected in urine tests at the least up to 72 hours after no longer using. Blood it can be longer and hair samples up to months.

my suggestion is to either stop using meth or be honest about when the last time you used was.