OBJECTIVES: Evaluate a new LC-MS/MS screening method for drugs and drugs of abuse as an alternative to the existing methods used in clinical toxicology laboratories. DESIGN AND METHODS: The work was divided in two parts. The first part was dedicated to the technical development and evaluation of the method for which a set of 97 drugs and relevant metabolites was used to perform a complete investigation of matrix effects and lower limit of identification (LOI). The second part was a comparison of identified drugs between LC-MS/MS and Remedi® instrument on clinical serum samples. RESULTS: The method offers good performance allowing an automatic peak detection and compound identification. The limit of identification is equivalent to 50 μg/L for the majority of the studied compounds. The process efficiency (PE) is higher than 70% for 65% of the evaluated compounds. Thus, a sufficient detection capability in terms of limit of detection for identification and PE satisfied the expected performance. CONCLUSION: The described methodology allows the identification of the main drugs incriminated in intoxications within a quite short analysis time. The separation of most of the analytes is performed in 15 min. The procedure is sufficiently sensitive and selective. Copyright Â
OBJECTIVES: Evaluate a new LC-MS/MS screening method for drugs and drugs of abuse as an alternative to the existing methods used in clinical toxicology laboratories. DESIGN AND METHODS: The work was divided in two parts. The first part was dedicated to the technical development and evaluation of the method for which a set of 97 drugs and relevant metabolites was used to perform a complete investigation of matrix effects and lower limit of identification (LOI). The second part was a comparison of identified drugs between LC-MS/MS and Remedi® instrument on clinical serum samples. RESULTS: The method offers good performance allowing an automatic peak detection and compound identification. The limit of identification is equivalent to 50 μg/L for the majority of the studied compounds. The process efficiency (PE) is higher than 70% for 65% of the evaluated compounds. Thus, a sufficient detection capability in terms of limit of detection for identification and PE satisfied the expected performance. CONCLUSION: The described methodology allows the identification of the main drugs incriminated in intoxications within a quite short analysis time. The separation of most of the analytes is performed in 15 min. The procedure is sufficiently sensitive and selective. Copyright Â
Authors: S Herrera López; M M Ulaszewska; M D Hernando; M J Martínez Bueno; M J Gómez; A R Fernández-Alba Journal: Environ Sci Pollut Res Int Date: 2014-06-22 Impact factor: 4.223