The USADA acknowledges this can show up as a result of taking other supplements
Dec 25, 2018, 1:02 AM
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“In the case of UFC heavyweight Josh Barnett, meticulous tracking and documentation of his regimen convinced a third-party arbitrator he didn’t knowingly take ostarine, which turned up in tests USADA conducted on a natural testosterone booster he purchased over the counter. After USADA initially proposed an 18-month suspension based on the aggravating factor of a previous anti-doping violation, the aribitrator ruled he should receive only a verbal warning.”