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Related Experiment Videos

A simple method for plasma cannabinoid separation and quantification

G Alemany1, A Gamundí, M C Nicolau

  • 1Department de Biologia Fonamental i Ciències de la Salut, Universitat de les Illes Balears, Palma de Mallorca, Spain.

Biomedical Chromatography : BMC
|September 1, 1993
PubMed
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A new method accurately resolves cannabinoid mixtures in plasma down to nanogram levels. This technique uses C-18 extraction, dansylchloride derivatization, and HPTLC with fluorescence detection for sensitive quantification.

Area of Science:

  • Analytical Chemistry
  • Forensic Toxicology
  • Pharmacology

Background:

  • Cannabinoid analysis in biological matrices like plasma is crucial for pharmacokinetic studies and forensic investigations.
  • Existing methods may lack the sensitivity or specificity required for accurate quantification at low concentrations.

Purpose of the Study:

  • To develop and validate a highly sensitive method for resolving and quantifying cannabinoid mixtures in human plasma.
  • To establish a reliable analytical technique for detecting cannabinoids at nanogram levels.

Main Methods:

  • Plasma samples were subjected to solid-phase extraction using a C-18 Sep Pak cartridge.
  • Extracted cannabinoids were derivatized using dansylchloride to enhance detectability.
  • High-performance thin-layer chromatography (HPTLC) on silica plates was employed for separation.

Related Experiment Videos

  • Quantification was achieved using fluorescence densitometry at an excitation wavelength of 340 nm.

    • Main Results:

    • The method demonstrated high sensitivity, capable of detecting cannabinoids at the nanogram level.
    • Successful resolution of complex cannabinoid mixtures in plasma was achieved.
    • The fluorescence densitometry provided accurate and reproducible quantification.

    Conclusions:

    • The described method offers a sensitive and reliable approach for cannabinoid analysis in plasma.
    • This technique is suitable for applications requiring the detection of low cannabinoid concentrations, such as in clinical and forensic settings.