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High-Throughput Extraction and Detection of Drugs in Urine: Parallel Sampling with Solid-Phase Microextraction (SPME) Fibers Coupled with Direct Analysis in Real Time-Mass Spectrometry (DART-MS) Detection

  • Frederick Li
  • Brian Musselman
Protocol
Part of the Methods in Molecular Biology book series (MIMB, volume 1810)

Abstract

Determination of drugs of abuse in urine is routinely accomplished by utilizing solid-phase extraction to isolate the drugs and gas chromatography/mass spectrometry (GC/MS) for their detection. Although robotic systems are employed, throughput is limited by the extraction process and GC chromatographic separation.

A method that utilizes an array of 12 solid-phase microextraction (SPME) fibers for simultaneous isolation of drugs of abuse from urine is provided as a means to increase productivity. A SPME probe holder that permits movement of up to 12 fibers through the various steps of the extraction process in parallel is utilized. Use of an automated stage for fiber presentation into the ionization region of a Direct Analysis in Real Time equipped LC/MS facilitates rapid interrogation of each SPME.

Key words

DART-MS Direct immersion Solid-phase microextraction Drug screening Toxicology 

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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  1. 1.IonSense, Inc.SaugusUSA

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