Founding WADA President Dick Pound has spoken out on the Shayna Jack case ©Getty Images

Founding World Anti-Doping Agency President Richard Pound has criticised Australia's "holier than thou" stance on doping after Commonwealth Games gold medallist Shayna Jack revealed she had failed a drugs test.

Confirmation of Jack testing positive for a banned substance came during the same week compatriot Mack Horton refused to share the medal podium with Sun Yang after finishing second to the Chinese swimmer in the 400 metres freestyle at the World Aquatics Championships in Gwangju, sparking accusations of hypocrisy in Australian swimming.

Sun, who served a three-month suspension in 2014 after testing positive for prohibited substance trimetazidine, has been accused of deliberately smashing his blood sample in a row with drugs testers earlier this year.

Jack revealed her 'A' and 'B' samples had tested positive for the prohibited anabolic agent Ligandrol was the reason behind her absence from the event in Gwangju.

"There has been a rather strange distinction between Australia's reaction to Sun Yang and to your own swimmer," Pound, the most senior member of the International Olympic Committee, told the Sydney Morning Herald.

"Australia should make it clear that they are as upset about one of their swimmers being caught for doping as they would be if the swimmer was Chinese.

"Australia has always been pretty firm about its opposition to doping but if the sauce is good for the goose it has to be good for the gander.

"If you are going to be holier than thou you should come to the discussion with clean hands.

"It looks like you have been walking both sides of the fence."

Shayna Jack has vowed to fight to clear her name after she tested positive for a banned substance ©Getty Images
Shayna Jack has vowed to fight to clear her name after she tested positive for a banned substance ©Getty Images

Jack, a member of Australia's 4x100m freestyle team that won gold at Gold Coast 2018 in a world record, has vowed to fight to clear her name.

She has claimed she did not ingest a banned substance intentionally.

The 20-year-old, who met officials from the Australian Sports Anti-Doping Authority in Brisbane today, promised her team would "leave no stone unturned" as part of the process.

"I'm really happy with how everything's going and I'm not going to stop until I prove my innocence and fight to get myself back in the pool because that's my dream and I'm never going to let that go," Jack said.

Jack, facing a four-year ban because of the positive test, also defended Swimming Australia, which has come under fire for keeping her failure under wraps.

She said she had agreed with Swimming Australia not to disclose her case.

"To be completely honest, Swimming Australia has been nothing but supportive and we've been a unit through the whole process," Jack added.