It was his very high level of testosterone. Then they chased a paper trail. You don't have extremly high levels of testosterone unless there is a reason.
However, testing by Major League Baseball showed that Ramirez had testosterone in his body that was not natural and came from an artificial source, two people with knowledge of the case told ESPN's Mark Fainaru-Wada and T.J. Quinn. The sources said that in addition to the artificial testosterone, Ramirez was identified as using the female fertility drug human chorionic gonadotropin, or hCG.
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