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U.S. Anti-Doping Agency (USADA)

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An empty track on a blue sky day.USADA announced today that Breanna Clark, 28, of Los Angeles, California, a Para athlete in the sport of track and field, has accepted a public warning after testing positive for hydrochlorothiazide (HCTZ), a prohibited diuretic. After a thorough investigation, USADA determined that Clark’s violation occurred when a family member responsible for Clark’s care, including medication dispensing, accidentally gave her their own HCTZ medication when arranging her daily vitamins. The HCTZ medication closely resembled two of Clark’s daily vitamins.

Because Clark’s positive sample from March 7, 2023 was collected out-of-competition, there are no competitive results to disqualify.

In an effort to aid athletes, as well as support team members such as parents and coaches, in understanding the rules applicable to them, USADA provides comprehensive instruction on its website on the testing process and prohibited substances, how to file and update athlete Whereabouts, how to obtain permission to use a necessary medication, and the risks and dangers of taking supplements, as well as performance-enhancing and recreational drugs.

In an effort to aid athletes, as well as support team members such as parents and coaches, in understanding the rules applicable to them, USADA provides comprehensive instruction on its website on the testing process and prohibited substances, how to file and update athlete Whereabouts, how to obtain permission to use a necessary medication, and the risks and dangers of taking supplements, as well as performance-enhancing and recreational drugs.

In addition, USADA manages a drug reference hotline, Global Drug Reference Online (GlobalDRO.com), conducts educational sessions with National Governing Bodies and their athletes, and distributes a multitude of educational materials, such as a supplement guide, a nutrition guide, a clean sport handbook, and periodic alerts and advisories.

USADA makes available a number of ways to report the abuse of performance-enhancing drugs in sport in an effort to protect clean athletes and promote clean competition. Any tip can be reported using the USADA Play Clean Tip Center, by text at 87232 (“USADA”), by email at playclean@USADA.org, by phone at 1-877-Play Clean (1-877-752-9253) or by mail.

USADA is responsible for the testing and results management process for athletes in the U.S. Olympic and Paralympic Movement and is equally dedicated to preserving the integrity of sport through research initiatives and educational programs.


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