Night Shade,

Police are not authorized to request a serum level test to determine if an individual is impaired and that is what we are talking about here, if you are arrested and tested for DUI. You are correct though, of course serum levels can be tested, this is how we determine if someone has overdosed or not. Nevertheless, in LE, we only ask the health care provider at the Hospital for a blood or urine sample and by law they can't tell us what the test results were, only if they were POSITIVE OR NEGATIVE and that's what goes into the report, whereas, after a breathalyzer, the BAC LEVEL is established and entered into the report. There is no legal way for LE to determine serum levels! As Americans, we still have a few rights, don't we? Take care.