Hair is a scientifically valid sample type 4 clenbuterol testing in the Canelo case. Yes there are variations w/ hair color. However they measure at picogram concentrations. A picogram is equal to one trillionth of a gram. This is ultra trace analysis by a WADA accredited lab.
Conte said this, one trillionth of a gram
Conte said this, one trillionth of a gram
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