Psilocybin is a prodrug that is rapidly converted to psilocin (the active compound) in the body. Psilocin has a short half-life of 1.5–3 hours and is eliminated quickly. Standard drug panels do NOT test for psilocybin or psilocin — detection requires specialized laboratory testing that is rarely performed outside research or forensic contexts.
Psilocybin is dephosphorylated to psilocin by alkaline phosphatase in the liver and GI tract. Psilocin acts on serotonin 5-HT2A receptors and is glucuronidated for urinary excretion. The total effect duration is 4–6 hours — significantly shorter than LSD.
Even with specialized testing, psilocin is only detectable in urine for 12–24 hours after occasional use. This extremely short detection window, combined with the fact that standard panels don't test for it, makes psilocybin one of the least detectable psychoactive substances.
Cross-tolerance develops rapidly with other serotonergic psychedelics (LSD, mescaline). Full tolerance resets in approximately 14 days. There is no physical dependence potential.
Psilocin Clearance
Clearance ≈ 5 × Half-life (1.5-3h) = 7.5-15 hours. Urine detection: 12-24h max.
Psilocin is eliminated rapidly. Even specialized tests have an extremely narrow detection window of 12–24 hours for occasional use.
Single use, standard employment drug test 2 days later.
Result: A standard drug test will NOT detect psilocybin/psilocin regardless of timing. Even specialized testing would be negative after 24 hours for occasional use.
No. Standard 5, 10, and 12-panel drug tests do not include psilocybin or psilocin. Only specialized laboratory testing can detect them, and this is rarely performed.
Psilocin (active metabolite) has a half-life of 1.5–3 hours. It's undetectable in urine after 12–24 hours for occasional use. This is one of the shortest detection windows of any substance.