Three years in the cold for Samperu on admission of doping
Kenyan marathoner Mathew Samperu has received a three-year ban by the Athletics Integrity Unit (AIU) after testing positive for the presence/use of a prohibited substance, testosterone.The 32-year-old tested positive after winning (1:04:23) the Pertamina ECO Runfest half-marathon in November last year. He went on to pick silver (2:15:46) at the Standard Chartered Singapore Marathon on 7 December, a result that has also been disqualified.Follow our WhatsApp channel for more newsAdditionally, the ban includes the forfeiture of any medals, titles, awards, points, prizes, prize money, and appearance money.On 23 November 2025, Samperu provided an in-competition urine sample at the Pertamina ECO Runfest held in Jakarta, Indonesia. On 19 January 2026, the World Anti-Doping Agency (WADA) accredited laboratory in Bangkok, Thailand, reported the Adverse Analytical Finding (AAF) in the sample based on the presence of testosterone and its metabolites, androsterone, etiocholanolone, SaAdiol, and 5ẞ..