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Evaluation of Evaporative Sample Preparation Techniques for the Extraction of Drugs of Abuse from Urine Samples by Forensic Science Ireland.
Introduction A method for the extraction of drugs of abuse from urine samples pertaining to drug facilitated sexual assault cases has been developed in house by Forensic Science Ireland (FSI). The method involves the use of solid phase extraction techniques prior to screening analysis by LCMSMS. As part of the solid phase extraction process, the extracted sample eluent is evaporated to dryness. FSI evaluated the use of a Genevac EZ‐2 personal evaporator (Figure 1) as an alternative method of evaporation as part of their validation process. The EZ‐2 was chosen due the fact that it eliminated the need for gases such as nitrogen, required for the conventional blow down evaporation method, and also reduced sample handling and reformatting stages.