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Urinary cannabinoid analysis: comparison of four immunoassays with gas chromatography-mass spectrometry
D Altunkaya1, A J Clatworthy, R N Smith
1Metropolitan Police Forensic Science Laboratory, London, U.K.
Forensic Science International
|July 1, 1991
Abstract:
Eight-eight urine samples were analysed by the EMIT d.a.u. Cannabinoid 20 ng homogeneous enzyme immunoassay, the DPC cannabinoid radioimmunoassay, two in-house cannabinoid radioimmunoassays and a gas chromatography-mass spectrometry method for 11-nor-9-carboxy-delta 9-tetrahydrocannabinol. There was good qualitative agreement between the methods with few discrepancies in the borderline region.