I've done the ETG tests before but it was a silly system where I could pick any day during the week and show up, I recall drinking a 12 pack on Sunday night and still passed on Wednesday, but I think it was out of sheer luck. Now that I'm officially on Probation I have to report once a month to meet the PO but he mentioned 'random screenings', it's been 5 weeks so far and nothing.
I know if I dont drink then obviously I have nothing to worry about, however going from a case a day to a couple a week is massive progress for me. I'm clean on drugs, and want 100% sobriety... just a bit of a struggle.