Just curious, is the test a pre-employment test, or is it a post critical incident test (example: accident in rig, etc...).
Pre-employment is a little more thorough and they are usually contracted out by an independent lab (not done by department). In addition a hair folicle sample they can test further back than say a urinalaysis. When they pre-employment test they're looking for "recreational drug" usage (marijuanna, crack, meth, pain killers, etc). Something that might indicate a pattern or addiction, or raises a red flag prior to a conditional job offer. A post critical incident test is taken by the department and used to determine whether your ability to perform your duties were impaired at the time of the incident (liability and grounds for termination). These tests are performed by the department and typically will only determine whether you had alcohol, or narcotics in your system at the time of incident. "Anabolic" tests are more expensive than either of the two prior tests, and are NOT typically part of either pre-employment, or post critical incident testing.
Departments can still test for these items, but will usually have a suspicion prior to testing, and hence have to be looking for the anabolic agent when performing the test. This test process will differ from the two mentioned above.