I've worked in a field where "drug tests" were a huge part of the deal. So much in fact that we don't get "5 pannel" tests, we get at least 7 or 11's. I can't even wager a guess how many drug tests I've taken, but I can tell you how many times I have been tested for juice..... NONE! They would've had to chase off half the crew, if they ever did lol.
Here's the thing - it isn't just a logistical nightmare, it is possibly a violation of their own "drug test policy". See, when you start a job, you should get a copy of their policy on drug testing and in it there will be a SPECIFIC list of substances they test for and HOW. if juice is not listed and yet they try to TEST you (hehe), it can end worse for them than you.
Short answer - you're gonna be fine unless you're a cop at an agency that has received bad press specifically about "roided out officers".