UK Anti-Doping may re-test Sir Mo Farah sample

The Daily Mail said Sir Mo Farah's sample would be among those analysed, although it would be for UK Anti-Doping (UKAD) and not the US authorities to decide whether there was cause to look again at any tests taken by British athletes.

Nicole Sapstead, chief executive of UKAD, said in a statement responding to the report that "status is no barrier to thorough testing or potential investigations".

"UKAD treats all athletes in the same way," she added.

Farah's coach Alberto Salazar, who runs the successful Nike Oregon Project running stable, is the subject of further allegations of wrongdoing after fresh details emerged from a US Anti-Doping Agency (USADA) report written last year.

The report was leaked to the Sunday Times by Russian hackers the Fancy Bears, with the newspaper reporting it was USADA investigators' belief that Salazar ''almost certainly'' broke anti-doping rules on drug infusions.

On Friday the BBC reported that the USADA dossier also said the 58-year-old American may have committed an anti-doping rule violation for possessing testosterone.

The World Anti-Doping Agency (WADA) rule 21.2.6 says athlete support personnel are prohibited from possessing banned substances without ''valid justification''.

The allegation that Salazar used the steroid hormone while working with athletes was first made by the BBC's Panorama programme and American website ProPublica in 2015.

That claim, and several others, prompted USADA to open an investigation which is ongoing.

Salazar has always denied any wrongdoing and told the BBC prior to publication of its latest report on the subject that he has been using testosterone, prescribed to him by a doctor, to treat a long-standing condition of hypogonadism. He also claims he has provided USADA with documentation to prove this.

Four-time Olympic champion Farah posted a message on his social media accounts last Sunday that reiterated his denials of wrongdoing.

Nevertheless, Sapstead confirmed that all British athletes could potentially have their samples re-tested based on new information.

She said: "All British elite athletes who are part of UKAD's whereabouts testing and/or reanalysis programme will be under the jurisdiction of UKAD even if they are overseas training or competing.

"Their samples will be tested and potentially reanalysed by UKAD based on intelligence received and improvements in detection methods.

"Each time a sample is reanalysed or sent to another location, the amount contained within a sample can be reduced or has the potential to degrade which limits the possibility to test again in the future.

"Decisions as to testing and analysis therefore require careful consideration, and national anti-doping organisations can quite legitimately disagree in this regard.

"We do not comment on our testing strategy or ongoing investigations, as has been made clear in recent investigations. Status is no barrier to thorough testing or potential investigations. UKAD treats all athletes in the same way."