Olympic defending marathon champion, Jemimah Sumgong, has had her ban extended to eight years.
This is after claims she had been injected with EPO, a banned substance, at a Nairobi hospital by an impersonator, were disregarded.
The International Association of Athletics Federation (IAAF) disciplinary tribunal ruled that there was no compelling evidence.
Jemimah had also allegedly lied about her medical records and her whereabouts after she tested positive for EPO in April 2017 for which she got a four-year ban.
Chaired by Michael Beloff QC, the IAAF decided that Jemimah had committed a second anti-doping offence of tampering with doping control.
Due to the changes of the World Anti-Doping Agency code, she was added another four-year ban. She is now banned for eight years.
Jemimah, who was the first Kenyan woman to win Olympic Marathon Gold, is banned until April 3, 2027.
When Jemimah was summoned, she explained citing that she had suffered a ruptured ectopic pregnancy in February that year leading to an injection and blood transfusion at a hospital in Nairobi.
She went ahead to provide anti-doping officials with five fabricated hospital documents to support her case. The Kenyan hospital, however, revealed that she had not visited the hospital as claimed.
When this was established, Jemimah went ahead to claim that an impersonator had treated her because of a doctors' strike which explained why there were no records of her visit.
Brett Clothier, head of the Athletics Integrity Unit, said the case had struck a blow against doping in Kenya.
“We hope that this sends a message to dopers that the AIU has strong investigative capabilities and does not tolerate false evidence in doping cases,” he stated.