not sure why they
test for alcohol metabolites as its not illegal to drink...sure if your drunk on duty or have a high alcohol content at work..not sure if they
test can detect alcohol up to one week...and scientifically, an average body loses .02% of alcohol per hour. so if your content is .20% which is pretty drunk, it should take about 10 hrs to leave the body. it also depends on your body size...how much of a drinker you are...and some say, how much water you drank if its a piss
test.