Diluting most of the time equals a fail. You want to drink water throughout the day and flush your system, then stop a few hours prior to your test. Go late in the day if you can.

It's close. That's really tight and most likely you won't pass, but there's always hope.

The window for an EtG is 36-48 hours for the average person - 80 hours is the outside limit. Drink water and make sure to urinate a lot before you test. Don't drink anything at all at least 2 hours prior to testing. You are trying to keep your bladder full of fresh urine not … Read more

Some say 72 to 80 hours. In reality for most normal adults the window is about 36-48 after alcohol has been metabolized (you sobered up).