The IOC has carried out 2,631 tests so far in Sochi, nearly 200 more than originally planned. Of those, 1,420 were pre-competition tests.
"It's not only the quantity but the quality which is important," Bach said. "We are making more use of intelligence and target testing."
— expressed confidence in the judging system used in figure skating. South Koreans claimed Vancouver gold medalist Yuna Kim was robbed of a second gold medal in favor of Russian teenager Adelina Sotnikova.
Bach said the judging system was applied by the International Skating Union, with judges randomly chosen and a skater's high and low marks not counted. The system was implemented after a judging scandal at the 2002 Salt Lake City Games.
"If there should remain (any) doubt that even this system is not enough to eliminate conflicts of interest, we would of course be very much interested to consult with the international federation," he said. "As of now we have confidence in the system."
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