The cost of an IOC standards test is in the 10,000 range- a friend of mine spoke with Dick Pound once and that is what he said.
So you can be sure that you will not be tested for performance enhancers.
potential employers only screen for drugs like marjuiana, cocaine, amphetamenes, barbituates, and opiods... and possibly an alcohol level, so don't choose the night before the test to go out and get tanked lol.
on the side though some cheaper performance enhancing tests only screen for the most common compounds such as winstrol, anavar, anadrol, dbol, boldenone, nandrolone (19-nor) trenbolone e.t.c.
But again, these test still cost approaching $1000.00 more or less, so an employer is not going to waste that kind of money.
instead, if you look like a total juice head, the employer has the decresion not to hire you if they don't like your appearance. That is totally up to them.