How good are the probation tests for alcohol?

My question is kinda off topic, but I'm on probation and of course there is the drug test. Now more then enough people have posted answers on this forum about passing the "drug" part of the test, but i was hoping someone could tell me if i'm safe to take the test after drinking 3 days ago and how good are the tests at detecting alcohol? I have probation tomorrow and i'm 99% sure they are gonna test me. I'm 16 btw, and one of the requirments for probation is no alcohol along with no drugs.

24-48 hrs

The T1/2(half life) for alcohol is actually very short. If you consumed enough 2-carbon units to have it show up 3 days later you would probably die. Let me know how that works out for you.:thumbsup:

Thanks for the advice. Came up clean on everything.