Trainer Francis Lui Kin-wai was fined HK$50,000 yesterday after an inquiry ended into the positive drug test returned by Charming Speedy last month. Lui was found guilty by Jockey Club stewards under Rule 140(1) for his failure to ensure the horse raced drug-free. As beaten favourite, Charming Speedy was routinely tested after finishing ninth at Sha Tin on December 23 and the Jockey Club laboratory reported the horse's urine sample positive to a synthetic corticosteroid, triamcinolone acetonide and its metabolite, hydroxytriamcinolone acetonide. The drug is often used where a lasting corticosteroid effect is required, such as an arthritic or joint problem, and the inquiry established Lui's stable vet injected Vetalog, containing the drug, to both stifles on December 12, 2006. Lui's penalty is not at the high end of the scale, with Australian trainer Joe Janiak fined HK$200,000 less than a fortnight ago for failing to present Takeover Target drug-free on the day of the Cathay Pacific Hong Kong Sprint. Gary Ng Ting-keung was fined HK$75,000 in October 2002 over his responsibilities under the same rule when Elephant Dance returned a positive to phenylbutazone. However, yesterday's inquiry found extenuating circumstances may have played a role in the drug leaving Charming Speedy's system slower than the recommended 10 days. Chief vet Brian Stewart advised the complexity of the stifle joint may have affected the excretion rate and the inquiry also heard Charming Speedy had been administered with another synthetic corticosteroid on December 8, which may too have possibly affected the rate of excretion. Fellow trainer Ricky Yiu Poon-fie also faces an inquiry tomorrow for his December 26 winner, Elfhelm, returning positive to the anti-inflammatory phenylbutazone.