How long will 8mg of Dilaudid stay in urine?

First of all if you don't know how to spell urine, don't be messing with Dilaudid. 12mg is A LOT of narcotic. So if you weren't given this by a professional licensed provider, STOP BEFORE YOU OVERDOSE! If you were given it in a medical setting, and you have to take a drug screen the doctor can account for you having it in your system. Hope this helps and I hope your concern is of the latter.