‘I Took Herbal Medicine and TestoXT Booster,’ Kipkorir Konga Insists as AIU Slaps 3-Year Ban

Kenyan distance runner Roncer Kipkorir Konga has been handed a three-year ban by the Athletics Integrity Unit (AIU) following the detection of exogenous testosterone in a sample collected out-of-competition.

The sanction, which takes effect from June 16, 2025, also disqualifies all results from December 29, 2024—the date the flagged sample was taken.

Konga, who provided the urine sample in Iten, Kenya, initially appeared to be in the clear when the World Anti-Doping Agency (WADA) accredited laboratory in Lausanne reported a negative result in January 2025.

However, a subsequent reanalysis requested by the AIU revealed the presence of testosterone and its metabolites, including 5αAdiol and 5βAdiol, consistent with external administration.

In response to the AIU’s findings, Konga denied knowingly using testosterone and pointed to two possible sources: a traditional herbal remedy prepared by his mother and a supplement called TestoXT Booster, which he purchased in Copenhagen in September 2024. He claimed to have used both shortly before Christmas.

‘I believe the body responded to this supplement until it became excess testosterone levels in the test,’ Konga wrote in his explanation to the AIU. ‘Maybe the combination of the herbs and the TestoXT supplement might have brought the rise of testosterone level high.’

Despite providing photos of the supplement container and a list of products he had used, the AIU concluded that neither the herbal medicine nor the TestoXT Booster could reasonably explain the adverse finding.

The Athlete Passport Management Unit further noted that the substances described were not consistent with the analytical profile of exogenous testosterone.

Konga ultimately signed an Admission of Anti-Doping Rule Violations and Acceptance of Consequences Form on August 11, 2025. As this is his first violation, he will serve a full three-year period of ineligibility, with no reduction granted.