ISOLUTE Supported Liquid Extraction (SLE+) plates and columns offer an efficient alternative to traditional liquid-liquid extraction (LLE) for bioanalytical sample preparation, providing high analyte recoveries, no emulsion formation and significantly reduced sample preparation.

This application note describes the extraction of a range of synthetic cannabinoids and metabolites from hydrolyzed human urine prior to GC-MS. Effective and efficient ISOLUTE SLE+ protocols optimized for sample loading volumes of either 400 uL or 1 mL are described. The simple sample preparation procedure delivers clean extracts and analyte recoveries greater than 83% with RSDs of <10% for all analytes.