An AIU statement said the sole arbitrator adjudicating the case concluded that Okagbare’s “use of multiple prohibited substances” was “part of an organised doping regimen in the lead-up to the Tokyo Olympic Games.”
This “egregious conduct” led to an increase on the normal four-year sanction.
The 33-year-old, who denied all charges, was given a five-year ban for returning doping tests positive for EPO as well as Human Growth Hormone.
She was then handed an additional five-year ban for refusing to cooperate with an AIU investigation.
“We welcome the decision of the Disciplinary Tribunal. A ban of 10 years is a strong message against intentional and co-ordinated attempts to cheat at the very highest level of our sport,” said AIU chief, Brett Clothier.
“This is an outcome that was driven by our intelligence-led target testing as well as our commitment to investigate the circumstances behind a positive test.”