Shrooms last in your system for 24-72 hours.
On average, it takes about 24 hours.
For frequent magic mushroom trippers, it may take longer (about 72 hours).
Magic mushrooms’ psychoactive compounds break down in your body quickly. The psychoactive compounds that are in your body when you consume shrooms is psilocybin and psilocin.
Psilocybin’s half life is 160 minutes and psilocin’s is 50 minutes. With a little math, psilocybin leaves the body after 13 hours and psilocin leaves the body after 4 hours.
Drug tests will not detect psilocybin and psilocin since they quickly leave the body. Hair samples can detect these compounds from trips from about 4 weeks ago. Drug tests hardly test for psilocybin and psilocin.
If you’re worried about this, please research local policies and regulations concerning drug tests in your region.