What classifies ‘intoxication’ on an inmates disciplinary records?

‘Intoxication’ means the same on the inside as it does on the outside. they either tested positive for a urine test for alcohol or drugs. when I was in federal, they would randomly UT inmates the day after a holiday. Alcohol got snuck in and people got wasted. It's easy enough to get weed, xanax, oxy or meth inside. BUT, if you test positive inside, you are getting some serious SHU time or worse.