What kind of urine test is used when someone is on probation or supervision?

Question

can those detect alcohol use in weeks or months before?

Answer 1

Probation is supervision - did you mean "parole"?

Not all tests rely on urine toxicology - some use the so-called oral swab.

Alcohol has a very short half-life in your blood stream, out in a few hours.  The problem is that probation/parole officers aren't supposed to conduct toxicilogy exams on a purely scheduled basis.  Spot checks are common, and in any event are held on a much more frequent basis than onece/monthly.  Some Parole officers are smart, secretly scheduling tests soon after holidays or personal events like birthdays or anniversaries.

Answer 2

unless you've been drinking within 24 hours prior to your urine test I wouldn't worry about it if that is what they are testing for....normally urine tests are for drugs.