It is a futile parlor game to guess who is and is not using illicit substances. Only one thing is certain, as I have written before: Not a single performance at the Olympics, nor in any other elite sport, can be believed with any certainty to have been achieved without banned performance-enhancing drugs.A clean urine sample means nothing. In fact, to get caught at the Olympics, where athletes know they will be screened, is more akin to failing an I.Q. test than a drug test.Gina Kolata of The New York Times wrote last week that the latest way to beat a urine test is to drop in a grain of powdered laundry detergent. Brighteners, which are enzymes that break down proteins, will destroy EPO and human growth hormone in the sample.
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