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The Analysis of Methamphetamine Seized in Singapore

Author

Listed:
  • Chan KB
  • Angeline TW Yap
  • Wendy JL Lim
  • Sylvia Tan
  • Tan Ying Ying
  • Yu Lijie
  • Elaine Lim Yi Lin
  • Maria Lieka

    (Illicit Drugs Laboratory, Applied Sciences Group, Singapore)

Abstract

In 2015, methamphetamine presented as crystalline methamphetamine hydrochloride called “ice†replaced heroin as the most abused drug in Singapore. Confiscations involving methamphetamine in the form of “wy†or “Yaba†tablets were far less common. Smoking is the most popular mode of administration for both forms of the drug. This mini-review presents a snapshot of recent seizures and an assessment of their liquid chromatographic (LC) and gas chromatographic (GC) quantifications. The long-term participation in an ISO accredited international proficiency testing (PT) program and the continual monitoring and assessment of our PT performance attest to the accuracy and traceability of the methamphetamine quantifications. A comparison of the laboratory’s LC and GC quantitative methods using split samples did not show a significant difference at the 95% confidence level. Virtually all ice seizures of weight ≤ 10 g, supposedly representing the lowest level of the drug distribution hierarchy, were more than 97% in purity. Chiral measurements by polarimetry, LC and GC revealed that d-methamphetamine was the predominant isomer.

Suggested Citation

  • Chan KB & Angeline TW Yap & Wendy JL Lim & Sylvia Tan & Tan Ying Ying & Yu Lijie & Elaine Lim Yi Lin & Maria Lieka, 2019. "The Analysis of Methamphetamine Seized in Singapore," JOJ Internal Medicine, Juniper Publishers Inc., vol. 1(2), pages 53-59, November.
    • Handle: RePEc:adp:jjojim:v:1:y:2019:i:2:p:53-59
    DOI: 10.19080/JOJIM.2019.01.555561
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