I am also on probation and have to take EtG tests. So, you are saying you drink that much on the weekends and can still pass the test? The only time I believe I have failed was when I was drinking vodka. Never do that again. But I did have 3 beers on Friday. Here is is Monday and I have to test. So, you think I will be fine?

May depend on when Friday, early or late? How much water have you had since then? More water will help clear the system...

Of course then all you have to worry about is a friend turning you in, or a girlfriend getting mad and turning you in, and so on

Metabolites are breakdown substances that result from metabolism of alcohol. In addition to the 90 minutes, the metabolites of alcohol may be dectable in urine for 24-48 hours after the last drink, depending on the expertise of the test you are given, and they are becoming more and more inquiring. Being on probation, has not impressed you enough to consider this situation as being serious, so why worry... now!