Women’s marathon world record-holder Ruth Chepngetich has been provisionally suspended after testing positive for a banned substance, the Athletics Integrity Unit (AIU) announced on Thursday.

Women's marathon world record-holder Ruth Chepngetich was provisionally suspended for a positive doping test on Thursday. Track and field's Athletics Integrity Unit said Chepngetich tested positive for a banned diuretic and masking agent in March and "opted for a voluntary provisional suspension while the AIU's investigation was ongoing.

Ruth Chepngetich, the marathon world record-holder, tested positive for the banned diuretic HCTZ in a urine sample collected on March 14, 2025. After an internal investigation, Chepngetich voluntarily accepted a provisional suspension on April 19 while the Athletics Integrity Unit continued its case.