News of the American's failed test emerged last month, but the details of the substance he tested positive for have - until now - not been made public. The letter, dated 23 July, states: "Using the Carbon Isotope Ratio Analysis it reported that the sample had an adverse analytical finding reflecting values that are consistent with the administration of a steroid of exogenous [external] nature. The letter goes on to say that a positive test for an "anabolic agent" of this kind would - if proven - be a violation of the World Anti-Doping Agency Wada code. Under the Wada code, the standard ban for an athlete found guilty of taking a prohibited steroid is two years - the maximum punishment currently available. A carbon isotope test, also known as an IRMS test, is normally used by anti-doping authorities to detect the banned steroid testosterone or closely related substances such as DHEA or androstenedione. These are known as precursors of testosterone.
Tyson Gay chosen for U.S. Olympic track team as relay runner
Tyson Gay - Wikipedia
Some athletes seeking to push the boundaries of their personal performance may find it tempting to grab a competitive advantage by looking beyond their training and nutrition. And on the world's biggest stage, at the Olympic Games, there are all too many instances of athletes who have turned to the use of a chemical advantage to gain a leg up on their fellow competitors. Most performance-enhancing substances are banned in sports, but there are still many that either can't be reliably detected or that have yet to be classified. In Olympics history, cheaters often face swift punishment, but sometimes, official rulings take years to resolve. Secondary drug tests may catch the offender after the competition, or arbitration may drag on. And no matter how clearly the rules are defined, debates over what actions should be punished, and how severely, endure.
Olympics: Americans drop baton, chance at medal
No cause of death was given. That film earned Tyson her only Academy Award nomination, but she received an honorary Oscar in November Martin Luther King Jr. It was her first time on Broadway in 30 years. Even after turning 90, Tyson was busy.
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