Testosterone is a naturally occurring steroid hormone. Despite its status as a steroid, prescription testosterone replacement ...

AN ANTI-doping lab using a new steroid test has found 266 positive cases in the past year and is finding other positives in retesting of old samples. Cologne lab scientist Hans Geyer revealed detailed ...

Baseball superstar Barry Bonds told a federal grand jury that he used a clear substance and a cream supplied by BALCO, the laboratory enmeshed in a sports doping scandal, but said he never thought ...