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Wing-Chi Cheng

3 papers in the library · 41 citations · publishing 2003-2024

Papers

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Fluorodeschloroketamine found as a street drug in drug seizures and drug driving cases in Hong Kong.

Forensic Science International August 1, 2024 Wing-Chi Cheng, Kwok-Leung Dao, Wing-Cheong Wong 3 citations

With the decline of the use of ketamine, one of the common drugs of abuse in Hong Kong, detection of ketamine-related analogues in local laboratories has been encountered. A brief account of the occurrence of fluorodeschloroketamine (FDCK) in forensic cases is reported through a retrospective study of all drug seizures and driving under the influence of drugs (DUID) cases since its first...

Roadside detection of impairment under the influence of ketamine--evaluation of ketamine impairment symptoms with reference to its concentration in oral fluid and urine.

Forensic Science International July 20, 2007 Wing-Chi Cheng, Kin-Man Ng, Ka-Keung Chan et al.

Although there are many roadside testing devices available for the screening of abused drugs, none of them can be used for the detection of ketamine, a popular abused drug in Hong Kong. In connection to local drug driving legislation, effective roadside detection of ketamine in suspected drug-impaired drivers has to be established. According to the drug evaluation and classification program...

Chemical Profiling of 3,4 Methylenedioxymethamphetamine (MDMA) Tablets Seized in Hong Kong

Journal of Forensic Sciences November 1, 2003 Wing-Chi Cheng, Nai-Leung Poon, Monica S. M. Chan 38 citations

Abstract During 2000-2001, the Government Laboratory of Hong Kong received over 600,000 ecstasy tablets in more than 2,600 cases. Using GC-MS or FTIR, the major amphetamine-type stimulants were identified, and the samples were categorized into four groups containing: (1) 3,4methylenedioxymethamphetamine (MDMA), (2) methamphetamine (MA), (3) 3,4-methylenedioxyamphetamine (MDA), or (4)...