Drug Schedules

How long does methamphetamine stay in your system after injection?

If someone who is not a user injected methamphetamine for two days, then was clean for 5 and had a swab test done on the fifth day, would they still test positive? I've read several different opinions across the web and I'm looking for facts. The typical answer seems to be 72 hours, but I'm not sure if the method of use or detection plays a factor in that... Anyone's input with knowledge or experience in this area would be great. Thanks.

Public Comments

1. methamphetamine generaly does not stay very long in the system. its metabolized pretty quickly in the liver and secreted in large amounts thruogh the urine. i would say after the fifth day with absolutely no use and a regular diet and fluids would show up as clean.
2. First of all, injecting this drug is very dangerous, it can cause a spike in blood pressure to cause a busted blood vessel in the brain, or heart arrythmia, or any of a number of other problems. Yes, I would say in 72 hours it would be well cleared from the body as its is highly soluble and its breakdown products are highly soluble, therefore it should wash out in the urine.
3. Depending on the user, if that person is a chronic user... it would take up to 72 hours after injection for the body to excrete it out. The method used in the screening test for methamphetamine will detect the drug itself and metabolites of methamphetamine, such as amphetamine. There is no time limit per se on the drug test.