Michelle Payne has to front a stewards inquiry after giving a urine sample at Swan Hill races which returned a positive to an appetite suppressant.
Melbourne Cup-winning jockey Michelle Payne has been stood down after returning a positive test to an appetite suppressant.
Payne, who last week competed at the famous Royal Ascot meeting in England, will attend an inquiry on Thursday into the finding of the substance in a sample she provided at the recent Swan Hill carnival.
The high profile jockey, who also holds a trainers' licence in Victoria, gave a urine sample at the Swan Hill Cup meeting on June 11 which was later found to contain Phentermine, an appetite suppressant and banned substance under racing rules.
A Racing Victoria stewards release on Wednesday said Payne was stood down from riding in races and trackwork on June 23 after they received the results.