Why is epitestosterone banned by many sporting authorities even though it does not enhance athletic performance in any way?

Since administration of epitestosterone is frequently done to mask a high level of testosterone if the standard T/E ratio test is used. As such, epitestosterone is banned by many sporting authorities being a well known masking agent for testosterone.Thus a wide range of diagnostic tests have been developed to determine the testosterone to epitestosterone ratio in athletes who are accused of doping.

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Keywords: testosterone: epitestosterone ratio T/E ratio

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