RYAN Crowley feels he got a fair hearing at his AFL Anti-Doping Tribunal on Monday, Fremantle coach Ross Lyon says.

Crowley faced the Tribunal in Melbourne on Monday after testing positive to a "specified substance" on July 31 last year.

The banned substance was contained in a painkiller that he took without consulting the club's medical staff prior to the round 17 clash against Greater Western Sydney last season.

Crowley accepted a provisional suspension in September last year and was due to face the Tribunal on May 1 but the hearing was delayed by 17 days after the Australian Sports Anti-Doping Authority requested more time to prepare following written submissions from Crowley's defence team.

The hearing began and concluded on Monday. 

The AFL released a statement saying the three-person Tribunal - comprised of chairman David Jones, former judge John Nixon and Dr Susan White - "reserved its decision and indicated it will hand down its decision as soon as practicable".

Lyon said he spoke to Crowley at Fremantle Oval on Thursday morning and said the 31-year-old was positive about the hearing.

"I saw him downstairs, (and) shook his hand," Lyon said on Thursday morning.

"He feels it's a step forward in the process. I didn't ask too many questions.

"He said he thought it was a fair hearing and from his end he thought it went well. He's obviously waiting for an adjudication."

Crowley faces a ban of up to two years if he is found guilty.

He has continued to train throughout his provisional suspension. He has trained with the squad at different stages but has trained on his own for the majority of the period as he has worked through some minor injury issues.