Despites of WADA’s efforts, doping reigns in sports

Recently Alan Abramson published an article where he noted whether tests conducted by the World Anti-Doping Agency (WADA) were efficient.
The WADA conducts more and more tests for steroids and other related medicines every year. It seems that those that apply steroids and/other related medicines are caught. One may believe that the world of sports and professional bodybuilding will be soon cleansed from administration of banned medicines. For example, numerous tests for banned medications have been conducted at the 2012 Summer Olympics.
But certain questions appear here. Are these tests sophisticated enough to detect any sportsperson who dopes? Are these tests efficacious?
Let meditate over results of certain tests. In 2010 the WADA published statistics according which 258,267 samples were analyzed by 35 WADA-accredited labs. Out of these samples 4,820 results represented atypical findings. Circa 60 % of positives indicated about steroid use. Numerous positives were for cannibinoids. 10 % positives indicated about usage of marijuana. As you observe, just 60% out of those that administered forbidden medicines applied steroids. Is it real? Don’t show the results of the tests that the WADA doesn’t do the job suitably?
The former president of the WADA Dick Pound thinks that at least 10 % of athletes who participated in the 2012 Summer Olympics took steroids. He affirms that those steroid users that are not clever are caught by anti-doping officials. He also claims that a sportsperson that has been caught administering banned preparations will fail an IQ test. He concludes that just unwise sportspeople can’t avoid detection.
So, when you read that the WADA has conducted numerous tests to make sports clean, think whether these affirmations are true. Has the WADA ability to make competitions fair? Why does the WADA notice about number of tests?
It seems that the WADA only desires to convince people that the job is done properly. The WADA wants to secure future funds. This is the reality.