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Call to adopt the Carbon Isotope Ratio

(Las Vegas, NV) . Dr. Margaret Goodman and the Voluntary Anti-Doping Association (VADA) called today for professional sports leagues to immediately adopt the Carbon Isotope Ratio (CIR) test for every screen used in testing for performance]enhancing drugs. To date, only the athletes who participate in VADA’s rigorous program undergo such testing.

"The recent positive tests for synthetic, or artificial, testosterone in professional and elite sports demonstrate that it is a problem at the highest levels of sport," said Dr. Goodman, President of VADA. "Clearly, some athletes are choosing to use the substance because they know it is not tested for upfront. It’s long past time that the CIR test was used across the board to test for synthetic testosterone."

In nearly all sports today, the CIR test is only used when testers suspect from other indicators a presence of synthetic testosterone. As a result, athletes and trainers who understand the limitations of this testing can "microdose" with synthetic testosterone in order to avoid triggering a CIR test. In the late 1990s, a number of brilliant anti]doping scientists.some of whom later acted as consultants to VADA.collaborated to develop a better way to detect doping with testosterone by using isotope ratio mass spectrometry (IRMS). The CIR/IRMS method is considered a superior, highly reliable test that culminates in measuring isotope ratios to determine whether testosterone is produced naturally or artificially.

Since its inception last year , VADA has used the CIR test as a screening method on every specimen. VADA is the first anti-doping organization to do so. "We commend our VADA fighters for stepping up and volunteering for the most stringent testing available," said Dr. Goodman. "They set a fine example for athletes in other sports."

"Synthetic testosterone, an anabolic steroid, is a banned and dangerous substance, and cannot be allowed into legitimate competitive sports," she added. "The potential harmful side effects of using it include damage to the liver, kidneys, heart, brain, and bones."

Margaret Goodman, M.D., serves as President and Chairman of the Board of the Voluntary Anti-Doping Association. She is a highly respected neurologist with a private practice in Las Vegas, and is a longtime advocate for unarmed combat]sport fighter health and safety.

The Voluntary Anti-Doping Association is an independent organization offering effective anti-doping programs in boxing and mixed martial arts that help protect the health and safety of its athletes and the spirit of their sports. Through voluntary participation in a rigorous testing program, boxers and mixed martial artists demonstrate their commitment to clean sport. VADA also educates participants, commissions and the public about the risks of using performance-enhancing drugs and the benefits of utilizing safe and effective nutrition and training practices.

For more about VADA, visit its website at

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