Boxer Larry Olubamiwo used 13 banned drugs for 6 years without having been caught

The heavyweight boxer Larry “War Machine” Olubamiwo applied certain anabolic steroids, HGH, IGF-1 and other doping products during 6 years. Although some tests have been conducted earlier, he was caught just in January 2012. After a fight against Sam Sexton Larry Olubamiwo tested positive for prohibited preparations. Metabolites of steroids were not discovered in his sample. The boxer tested positive for EPO. EPO is a blood boosting medicine.
Long-term application of prohibited preparations by Olubamiwo was a real embarrassment for the United Kingdom Anti-Doping. Andy Parkinson, the CEO of the UKAD, tried to prove that the suspension of Olubamiwo for application of 13 different forbidden medications is a real success of the UKAD in the struggle against doping.  
Andy Parkinson confirmed that it was an unusual case. The boxer applied steroids and other related medicines for long period of time without fear to spoil his health, career and reputation. He was sentenced to 4-year ban.
But the alarming fact is following: Olumamiwo could avoid detection for long time, despites essential efforts of anti-doping officers to “clean” sports from application of doping drugs.
Olubamiwo was caught only because the UKAD was informed by the United States Drug Enforcement Administration (DEA) that he became the target of an investigation related to illicit sale of anabolic steroids and other doping drugs in the US. Then the UKAD conducted a test that resulted in positive results for EPO.
Robert Smith, the General Secretary for the British Boxing Board of Control, supported the statements of Andy Parkinson about efforts and success of anti-doping agencies. He noted that the case displayed that cheating couldn’t be hidden.
What is your point of view about the case? Do positives for EPO and the ban of Olubamiwo demonstrate that anti-doping officers work successfully? Or does the case demonstrate that anti-doping policy is not proper?
Every person may make own conclusion. But it is clear that the boxer could administer different banned medicines for 6 years without being detected by anti-doping officers.