The Court of Arbitration for Sport (CAS) blasted Jamaican anti-doping officials for the mishandling of a drug test by sprinter Veronica Campbell-Brown that led to a successful appeal of the Olympic gold medallist’s two-year ban.

In a scathing 58-page report explaining the decision to uphold Campbell-Brown’s appeal, a CAS panel cited errors in the collection and handling of the sprinter’s urine sample last year that could have resulted in its contamination, calling into question the entire Jamaican anti-doping operation.

“In this case, the evidence before the panel establishes that the JAAA has persistently failed to comply with the mandatory partial testing,” said CAS.

“That systematic and knowing failure is deplorable and gives rise to the most serious concerns about the overall integrity of the JAAA’s anti-doping processes, as exemplified in this case by the flaws in JADCO’s (Jamaica Anti-Doping Commission) sample collection and its documentation.”

The World Anti-Doping Agency (WADA), while concurring mistakes were made in Campbell-Brown’s case that were fundamental to the integrity of the testing process, said it was confident the errors would not be repeated.

“WADA responded to past concerns in Jamaica by initiating a partnership with the Canadian Centre for Ethics in Sport to mentor and assist JADCO in anti-doping programmes,” the global agency said.

“As a result, WADA is confident that such mistakes will not be repeated again.”

Jamaica’s anti-doping efforts underwent a major overhaul in late 2013, a year in which eight Jamaicans failed doping tests.

The entire JADCO board re-signed and a new executive director was appointed and Jamaican athletics federation president Warren Blake said this week the problems were now in the past.