Ben Currie has been found guilty on a further five charges, this time involving positive swabs.
Currie is already serving a four year disqualification over text messages which stewards found indicated the use of an electrical device, known as jiggers.
He is also awaiting sentence on 12 other charges after being found guilty of race day treatments Another 14 similar charges are yet to be heard while Currie is seeking internal reviews of convictions.
Racing Queensland stewards heard evidence regarding the positive swabs on Monday and yesterday. After taking evidence and submissions they found Currie guilty on all five charges of bringing horses to race with a prohibited substance.