Admit it: you raved all night at Burning Man, and the whole experience was otherworldly. But now you're heading back to work wondering how long your week of fun will remain in your system. It's important to plan ahead for these kinds of things, particularly since failing a test for substances can mean the difference between everything from keeping a job to maintaining a place on your sports team to saving a life. There is no clearcut timeline of drugs making their way through a person's liver and kidneys before being flushed out of the body via sweat, urine, or defecation: the best idea for passing a test is to avoid certain substances in the first place.
But if you've gone ahead and partied already, you will want to know how your body processes them. The way your body works through hard substances depends on the type of drug, the level of use, the health of the kidneys and liver of the user, and one's fitness level. The type of test being administered and what bodily fluids are used for detection determines the timeframe for testing positive for use. The worst drugs for you to ingest can be found in blood, urine, saliva, and even hair for days or weeks after use. But each drug is different, and looking at the whys and hows is fascinating - and may lead to more caution in the future.