LAUSANNE, Switzerland -- Anti-doping laboratories are working on a test to detect a powder used to destroy traces of the performance-enhancer EPO in urine samples.

Martial Saugy, the head of the Swiss anti-doping laboratory, said there have been suspicious tests during the last year in which no traces of EPO -- or erythropoietin -- were found in athlete's urine, not even natural EPO produced in the kidney. Researchers suspect cheats are using a substance called protease -- sometimes used in stain removers -- to wipe out traces of EPO in their urine.


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