Most standardized drug tests don't look for psilocybin or psilocin, so this test is geared specifically towards mushroom drug testing for those looking to bridge that gap. Psilocybin mushrooms are also known as magic mushrooms, shrooms, and purple passion. They are categorized as a Schedule I controlled substance. When psilocybin enters the body, it turns into psilocin and is believed to have effects on serotonin levels in the brain. It can lead to unusual and altered perceptions due to different brain regions having an increase in activity. Effects include paranoia, nervousness, panic reactions, nausea, and yawning.