In fact, the problem of police steroid use became so bad, in 2004, the DEA intervened to warn of the "possible psychological disturbances" of roid-raging cops.
The DEA said symptoms included:
Mood swings (including manic-like symptoms leading to violence)
Impaired judgment (stemming from feelings of invincibility)
Hostility and aggression
Eventually, a few years later, the International Association of Chiefs of Police, made up of 16,000 members worldwide set a standard that "calls upon state and local law enforcement entities to establish a model policy prohibiting the use of illegally obtained steroids" by officers.
However, this policy never happened.
Not only do cops vehemently resist being drug tested by their departments, claiming it is a violation of their civil rights, they are also frequently caught selling steroids.