The rate at which meth leaves your system will depend on the amount used, the method of use, and your personal biology.
In general, it takes about 12 hours for half of the meth taken to be eliminated from the body. This is referred to as the meth half-life.
The type of test will also determine how long meth will be detectable in your system.
- Blood: Meth stays traceable in blood for around one to three days.
- Saliva: Saliva tests will pick up meth for about one to four days.
- Urine: Meth in urine is detectable for about a week.
- Hair: In hair, meth use can be detected for up to three months.