The Athletics Integrity Unit has handed a five-year ban to Kenya’s Albert Korir after he tested positive for CERA, a prohibited blood-boosting substance.
Korir, the 2021 New York City Marathon champion, returned positive results in three separate out-of-competition tests conducted in October 2025.
Both urine and blood samples collected on October 3, 13, and 21 confirmed the presence of CERA, an EPO-based substance banned at all times.
Initially facing a six-year ban due to multiple violations, the sanction was reduced to five years after Korir admitted the offence within four days of notification. His ban will run until January 7, 2031.
All results from October 3, 2025, onwards have been disqualified, including his third-place finish at the 2025 New York City Marathon, along with associated medals, prize money, and appearance fees.
The case underscores the continued vigilance of anti-doping authorities in endurance events, particularly concerning blood-boosting substances.