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Olympic and world 400m champion LaShawn Merritt has failed a doping test his lawyer said on Thursday.Howard Jacobs claimed in a statement that the positive test was caused by Merritt's "use of an over-the-counter male enhancement product".
Jacobs said: "LaShawn Merritt has accepted a provisional suspension as a result of [the] positive drug test."
The American, 23, faces a two-year ban and admitted he had made a "foolish, immature and egotistical mistake".
Merritt claimed he had not been aware that the product he used contained the banned steroid Dehydroepiandrosterone (DHEA)
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