Shayna Jack emerged from more than four hours of talks with Australian Sports Anti-Doping Authority officials vowing to “leave no stone unturned” in the fight to clear her name after failing a drug test.

The 20-year-old, flanked by her lawyer Paul Horvarth and her mother, faced the media for the first time since news broke that she had tested positive for the banned substance Ligandrol, a muscle growth agent, during an Australian swim camp ahead of the world championships in South Korea.

Jack, who is facing a four-year ban and potentially the end of her career, denies knowingly taking the drug but faces an uphill battle to avoid serving the full ban.

“I’m not going to stop until I prove my innocence,” Jack said. “I’ll fight to get myself back into the pool because that’s my dream.”

She returned a positive A sample weeks before the world championships in South Korea, forcing her to quit the Dolphins’ training camp citing “personal reasons”. It only became public that she had failed a drug test when news leaked of her B test result midway through the championships in Gwangju.

Swimming Australia faced accusations of covering up the test results and allowing Mack Horton – who, like the rest of the team, was oblivious to the reasons for Jack’s sudden withdrawal – to stage a high-profile protest against Sun Yang, who is at the centre of doping allegations.

But Jack denied any rift between her and the national swimming body and said on Friday afternoon that they had been working together on the case.

“Swimming Australia has been nothing but supportive towards me and we have been a unit through the whole process, every decision we have made has been together, and we are very happy with every decision we have made,” Jack said.

It is expected Asada will provide Jack’s legal team with a letter outlining the case against her in four-to-six weeks. “We will leave no stone unturned in preparing her defence to this case,” Horvarth said.