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  • Title: High performance liquid chromatography-immunoassay of delta 9-tetrahydrocannabinol and its metabolites in urine.
    Author: Peat MA, Deyman ME, Johnson JR.
    Journal: J Forensic Sci; 1984 Jan; 29(1):110-9. PubMed ID: 6321632.
    Abstract:
    High performance liquid chromatographic-immunoassay (HPLC-IA) profiles of cannabinoid metabolites in urine samples were obtained using four different antisera. The urines were chromatographed on a reverse phase system using a gradient of acetonitrile in water (pH 3.3) and fractions collected every 30 s. Some urine samples were hydrolyzed with methanolic sodium hydroxide before fractionation. Peaks of immunoreactivity were detected at a fraction corresponding to 11-nor-9-carboxy-delta 9-tetrahydrocannabinol (COOH-THC) and at an early eluting fraction; however, the profiles depended upon the specificity of the antisera used.
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