The hearing into Ryan Crowley's doping allegations has concluded, but the star Fremantle tagger will probably have to wait several weeks before finding out his fate.

Crowley fronted the AFL's Anti-Doping Tribunal on Monday after testing positive to a "specified" banned substance last year.

"It was good to have my say, but I can't really talk too much about it," Crowley told the Seven Network.

If found guilty, Crowley faces a ban of up to two years.

The 31-year-old has been provisionally suspended since September last year.

Crowley claims he ingested the banned substance through a painkiller he sourced from outside of the club.

A decision one way or another isn't expected until later this month or early next month, with the tribunal saying it will hand down its findings "as soon as practicable".

The three-person tribunal  was comprised of chairman David Jones, former judge John Nixon, and Dr Susan White.

Monday's hearing was closed to the media, meaning few details will be made public even once the decision is handed down

Dockers coach Ross Lyon said last week that it was too  hard to predict whether Crowley will be able to play for the club this season.

"It's out of my jurisdiction. I'm sitting here waiting for the outcome like you are," Lyon said.

"ASADA aren't ringing me up and saying, 'We haven't heard the case yet, but here's what's going to happen'.

"Look, he would be stressed.

"He would like it resolved one way or another.

"It's disappointing he's found himself in that (situation).

"But he's worked his way into it, and at the end of the day he's accountable."