I have a friend who is in a 5 year monitoring program with 3 Urine etg per month and probably around 2-3 peth a year. She's in a very tough state with a strict monitoring program. She's already past her 2 year mark I believe.
Anyway, she apparently drank 6-7 drinks on a long weekend, and then had a random peth right on the Monday. She already had a peth just recently. The peth came back very low positive, at 24. Below 20 is reported abstinence.
Now, they are making her go to a 96 hour evaluation to determine the next steps. She is saying she ate beef burgundy as to why she has a positive peth. But I think she knows also that the 96 hour evaluation is just a "show" and that they will recommend rehab again. If that happens, she would need to put her job on hold, or more likely lose her current job.
Don't try to mess around here folks! Because if your program has random peth tests, you can't beat that.