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Ruth Chepngetich holds the Kenyan flag after winning the Chicago Marathon in world-record time on Oct. 13, 2024, in Grant Park. (Tess Crowley/Chicago Tribune)
Ruth Chepngetich holds the Kenyan flag after winning the Chicago Marathon in world-record time on Oct. 13, 2024, in Grant Park. (Tess Crowley/Chicago Tribune)
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MONACO — Women’s marathon world record holder Ruth Chepngetich has been banned for three years after admitting a doping violation, track and field’s Athletics Integrity Unit said Thursday.

The AIU said Chepngetich admitted anti-doping rule violations over the presence and use of the banned diuretic hydrochlorothiazide, or HCTZ, which can be used to disguise the use of performance-enhancing drugs. She had been suspended in July.

The AIU also said Chepng’etich had accepted the charges and sanction following a positive test for the banned diuretic from a March 14 sample.

The 31-year-old Kenyan runner broke the world record by almost two minutes at the 2024 Chicago Marathon, clocking 2 hours, 9 minutes, 56 seconds. It was her third win in Chicago.

All Chepngetich’s achievements and records before the March 14 sample will still stand.

The AIU said that while diuretics are known to be abused by athletes to mask the presence in urine of other prohibited substances, HCTZ has also been identified as a potential contaminant in pharmaceutical products.

Chepngetich could not provide an explanation for the positive test when she was first interviewed in April. In a July 11 interview, she was confronted with evidence acquired from her mobile telephone indicating “a reasonable suspicion that her positive test may have been intentional,” the AIU said.

At the time, Chepngetich maintained her position that she could not explain the positive test and that she had never doped.

The AIU said Chepngetich on July 31 changed her previous explanation.

“She wrote to the AIU to state that she now recalled that she had taken ill two days before the positive test and she had taken her housemaid’s medication as treatment, without taking any steps to verify if it contained a prohibited substance,” the AIU said. She stated that she had forgotten to disclose this incident to the AIU investigators. She sent a photo of the medication blister pack which clearly marked the medication as being ‘hydrochlorothiazide.’”

FILE - Ruth Chepngetich, from Kenya, crosses the finish line of the Chicago Marathon to win the women's professional division and break the women's marathon world record in Grant Park on Oct. 13, 2024. (Tess Crowley/Chicago Tribune via AP, file)
Ruth Chepngetich, of Kenya, crosses the finish line of the Chicago Marathon to win the women's race in world-record time on Oct. 13, 2024, in Grant Park. (Tess Crowley/Chicago Tribune via AP, file)

The AIU said anti-doping rules treat such “recklessness described by Chepngetich in taking her housemaid’s medication as being indirect intent, for which an increased four-year sanction applies.”

Since Chepngetich eventually accepted the proposed sanction within 20 days, she was granted an automatic one-year reduction of the four years.

“The case regarding the positive test for HCTZ has been resolved, but the AIU will continue to investigate the suspicious material recovered from Chepngetich’s phone to determine if any other violations have occurred,” AIU head Brett Clothier said in a statement.

AIU Chair David Howman said the case underlines that “nobody is above the rules” and lauded the industry’s commitment to the integrity of the sport.

Chepngetich also won the marathon at the 2019 world championships in Qatar, where the women’s race started at midnight to avoid extreme daytime heat.