I was arrested for a OWI. I drank a beer on Wednesday, and took some sips from a beer on Friday. I went out of town on Satuday, Then took a pee test on Monday. Do you think my Probation officer used the ETG? If he did, do you think I will pass?

I would be guessing - if you are on probation, not allowed to drink, you are playing around and drinking, sooner or later you're going to get a surprise test and fail. It's the law of averages.

Probably better now rather than later.