Ah, I misunderstood it to mean the test wouldn't report positive with a script, not his office wouldn't report positive with a script. Mea culpa.
ah, yes, i was probably not clear. I was simply pointing out that, in this instance, someone could be using something while at work and the test results wouldn't reflect that. That using CBD oil on your own will get you in trouble, but being high as a kite on opioids might not 'show'.