Libardo Niño of Colombia has tested positive for EPO (Erythropoietin) following his silver medal in the Pan American Games time trial.
He has pronounced his innocence. "I'm absolutely sure that I did not consume any banned substances, much less before the Pan American Games," the 38 year-old told Caracol Radio on Saturday, according to the AP. He said that he was willing to undergo another blood test.
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