The problem is not that there are no drug tests.
The problem is that there are drug tests.
The drug tests are NEVER EVER complete, total, and fair.
The reason the NPC in the US and the IFBB Pro League have less problems: no drug tests!!!
Doping for bodybuilders is like virginity tests for prostitutes. It will never work.
You prefer to watch Mr. Olympia or Musclemania?
The second problem is the corruption in the IFBB. As long as there are Santonjas or Fahims, nobody cares about the athletes. It's just about the pockets of the officials.
Please check the honest, but devastating email from Axel Bauer, the (former) lawyer of the IFBB to Rafael Santonja. He has meanwhile been kicked out of the IFBB.