How long meth take to leave your system if you have a urine test?

Still same answer: The answer is still that meth remains detectible in urine for 2-4 days after last use. It is an addictive and dangerous substance, and we on healthtap hope you will not use it.

Better not to use : Half life is 4-5 hours which means within a day or 2 it would be undetectable, but everyone has different metabolism so depends on individual. Most drug testing is random, so only way to be sure of a negative test is not to use at all. Meth has many long term and possibly permanent effects on the brain and the rest of the body.