If i were to get drunk, like really drunk how long before it completely leaves my system? (urine wise) i hear around 12 hours to 2 days.

If: You got really drunk you could put your life (and others) in danger from alcohol poisoning.

Ethyl glucuronide: This will be up for up to four days after you drink. Why do you ask? How about drinking in moderation, if at all? If you get very drunk, you may say or do something you'll regret for the rest of your life. Life's hard enough without that stuff. Best wishes.