You may just go for the hell of it, and stay on the test even during.
The random drug testing is often a bullshit claim to discourage use.. Testing for Anabolic Steroid metabolites is fucking expensive.. even government departments and the military don't like to do it unless they absolutely have to (cost wise).
It isn't easy like tests for recreational drugs, that can be tested in minutes..
You can also refuse the test if they request you take one..
So go, Lift.. have a blast.. I doubt they will test you, but it is possible.. and if they ask you to take one, tell them to screw themselves.. or call their bluff and piss for them, they may not even test it- even though they claimed they would!