EPO Positive: Olympic Champion Peres Jepchirchir Provisionally Suspended, Sydney Marathon Title at Risk
ओलंपिक और विश्व चैंपियनशिप की मैराथन स्वर्ण पदक विजेता पेरेस जेप्चिरचिर को एथलेटिक्स इंटीग्रिटी यूनिट (AIU) ने अनंतिम रूप से निलंबित किया है, क्योंकि प्रतिस्पर्धा से बाहर लिए गए उनके नमूने में EPO (एरिथ्रोपोइटिन) पॉजिटिव पाया गया। 33 वर्षीय केन्याई धाविका ने यह नमूना 30 अगस्त 2026 को सिडनी मैराथन जीतने से पहले, केन्या में दिया था; उन्होंने वह दौड़ 2 घंटे 18 मिनट 31 सेकंड में जीती थी और अपनी ही देश की इरीन चेपेट चेपटाई को तीन मिनट से अधिक से हराया था। EPO एक प्राकृतिक हार्मोन है जो गुर्दों में बनता है और लाल रक्त कोशिकाओं के निर्माण को बढ़ाता है; इंजेक्शन के रूप में लेने पर यह खून में ऑक्सीजन-वहन क्षमता बढ़ाता है और सहनशक्ति में कृत्रिम वृद्धि करता है, तथा पेशाब या खून में केवल कुछ दिनों तक पकड़ में आता है। जेप्चिरचिर 2017 में हाफ मैराथन विश्व रिकॉर्ड तोड़ चुकी हैं और 2020 में तीन बार यह रिकॉर्ड सुधारा; उन्होंने टोक्यो ओलंपिक (2020) की मैराथन और सितंबर 2025 की विश्व चैंपियनशिप के अलावा न्यूयॉर्क 2021, बोस्टन 2022 और लंदन 2024 मैराथन जीती हैं। अनंतिम निलंबन अंतिम दोषसिद्धि नहीं है: एथलीट के पास B नमूने की जांच, सुनवाई और अपील का अधिकार है। यदि आरोप साबित होता है तो EPO के लिए सामान्य सज़ा चार साल का प्रतिबंध है और नमूना लेने की तारीख से आगे के परिणाम—जिसमें सिडनी का खिताब भी शामिल है—रद्द हो सकते हैं। B नमूने का नतीजा और अंतिम फैसला अभी सार्वजनिक नहीं है।
Summary
Olympic and world marathon champion Peres Jepchirchir has been provisionally suspended by the Athletics Integrity Unit (AIU) after an out-of-competition sample returned an adverse analytical finding for EPO (erythropoietin). The sample was provided in Kenya before she won the Sydney Marathon on 30 August 2026. The 33-year-old Kenyan clocked 2:18:31 to take the title in Sydney.
This is one of the most significant doping cases in women's distance running in recent years. Jepchirchir won the women's marathon at the Tokyo 2026 Olympics, returned to Japan to win the World Championships marathon in September 2026, set the women's half-marathon world record in 2026 and broke it three more times in 2026. Her other major victories came at the New York Marathon in 2026, the Boston Marathon in 2026 and the London Marathon in 2026.
What EPO is and why it matters
EPO is a natural hormone produced mainly in the kidneys that stimulates the production of red blood cells, which carry oxygen to muscles. When injected, it raises red blood cell count and therefore oxygen delivery, boosting endurance. It is only detectable in urine or blood for a short window after administration, which is why out-of-competition testing is considered critical.
Under the WADA Prohibited List, EPO sits in category S2 (peptide hormones, growth factors and related substances). It is a non-specified substance and a substance of abuse, meaning it is banned at all times and the scope for reducing sanctions is limited.
Detection typically relies on isoelectric focusing and SAR-PAGE analysis of urine samples, and in some cases on the Athlete Biological Passport, which tracks blood parameters over time to flag abnormal variation. In this case the finding is of the substance itself, rather than a passport-derived anomaly.
The process ahead
A provisional suspension is not a final finding of guilt. Under the anti-doping framework, the athlete has the right to have the B sample analysed, to present evidence, and to appeal to an independent disciplinary tribunal and ultimately to the Court of Arbitration for Sport.
EPO carries a standard four-year ban for a first violation unless the athlete can establish that the violation was not intentional—a difficult argument for an injected substance. Results from the date of sample collection onward can also be disqualified, which puts the Sydney title, prize money and ranking points at risk.
No official statement from the athlete, and no publicly confirmed B-sample outcome, is currently available. Until the process concludes, the presumption of innocence applies.
Career context
Jepchirchir's record is exceptional: half-marathon world records starting in 2026, Olympic gold in Sapporo at Tokyo 2026, the 2026 New York title, Boston in 2026, London in 2026, and a world title in Tokyo in September 2026. The Sydney Marathon she won became the seventh Abbott World Marathon Majors race in 2026, adding global significance to her victory there. She beat compatriot Irene Chepet Cheptai by more than three minutes.
Wider impact
The case casts a shadow over Sydney's emergence as a World Marathon Major, affects the World Marathon Majors points system, and renews scrutiny of Kenyan athletics, which has faced a long series of doping cases over the past decade. It also shifts the competitive landscape of women's marathon running ahead of the 2028 Los Angeles Olympics, and feeds public scepticism about fast times and dominant performances.
What is confirmed and what is not
Confirmed: the adverse finding for EPO, the provisional suspension, the timing of the sample before the Sydney race, and the race result. Not confirmed: the B-sample outcome, any final sanction, and the precise consequences for past results. Reports should reflect that distinction until the disciplinary process reaches a conclusion.
Timeline
- 2026: Women's half-marathon world record.
- 2026: Three further half-marathon world records.
- Tokyo 2026 Olympics (held 2026, Sapporo): marathon gold.
- 2026: New York Marathon win.
- 2026: Boston Marathon win.
- 2026: London Marathon win.
- September 2026: World Championships marathon gold in Tokyo.
- 2026: Sydney Marathon joins the Abbott World Marathon Majors as the seventh race.
- 30 August 2026: Wins Sydney Marathon in 2:18:31; Irene Chepet Cheptai second.
- Pre-race, in Kenya: Out-of-competition sample collected; later reported as EPO positive.
- AIU announces provisional suspension.
- Next: B-sample analysis, hearing, possible sanction and disqualification of results.