Ruth Chepngetich exceeded Ethiopian record holder's women's marathon world record by almost two minutes at the Chicago Marathon in 2024.
Women's marathon global champion Ruth Chepngetich has been prohibited for 36 months after the Kenyan admitted to anti-doping infractions.
Chepngetich was provisionally suspended in July following a failed test for Hydrochlorothiazide (HCTZ) - a prohibited substance used commonly as a masking agent - on 14 March.
The athlete's achievements which pre-date that test - including her world record time of 2:09:56 in Chicago in 2024 - will still stand.
The sports governing body had requested a 48-month ban but the 31-year-old punishment was reduced to 36 months because she admitted to the infractions.
However, the AIU will keep examining evidence from Chepngetich's mobile device which it found indicate "a reasonable suspicion that her positive test may have been intentional" - featuring communications from as early as the year 2022.
"This matter concerning the failed test for the substance has been settled, but the AIU will keep looking into the questionable evidence recovered from the runner's device to determine if any further infractions have taken place."
When interviewed in April by the integrity body, the marathoner, the first woman to complete a marathon in under 2:10, was unable to give an explanation for the positive test.
While the substance has a minimum reporting level of 20 nanograms per millilitre (ng/mL) in urine, Chepngetich's sample showed an approximate level of 3800 ng/mL.
Small amounts of the diuretic below the detection threshold were also found in a test taken from Chepngetich 14 days prior, on 28 February.
At a later interview on July 11, Chepngetich was shown the previously mentioned suspicious evidence obtained from her mobile. In the meantime, accidental exposure had also been ruled out by the authority.
The athlete altered her story on 31 July, stating that she had taken her domestic worker's pills - labeled as being HCTZ - after falling sick 48 hours prior to the failed test.
The AIU had "major doubts about the credibility of the revised account" and, in the context of the athletics' doping rules, such "recklessness" is considered "indirect intent, for which an increased four-year penalty is applicable".
An standard 12-month decrease was granted after the runner admitted the doping breaches within the 20 days required.
The 36-month suspension started on 19 April - when the athlete accepted a temporary ban - with the competitor's results, awards, titles, participation and prize money since March 14 forfeited.
"Nobody is exempt from regulations."
"Although disappointing for those who had faith in this runner, this is how the process is supposed to work."
"The road-running industry should be praised for jointly supporting anti-doping efforts able to uncovering doping violations performed by top competitors in their races."
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