skip navigation


Register for Latest Research

Stay Informed
Register with NCJRS to receive NCJRS's biweekly e-newsletter JUSTINFO and additional periodic emails from NCJRS and the NCJRS federal sponsors that highlight the latest research published or sponsored by the Office of Justice Programs.

NCJRS Abstract

The document referenced below is part of the NCJRS Virtual Library collection. To conduct further searches of the collection, visit the Virtual Library. See the Obtain Documents page for direction on how to access resources online, via mail, through interlibrary loans, or in a local library.


NCJ Number: 230032 Add to Shopping cart Find in a Library
Title: Enhanced Studies of LC/MS/MS Capabilities to Analyze Toxicology Postmortem Samples
Author(s): George Herrin, Jr., Ph.D.; Lisa Holt, M.S.; A. Michael Morrison, M.S.; Lori Nix, B.A.; Joseph Austin, Ph.D.; Troy Dettmering, B.S.; Jon Stephenson, B.S.; Jessica Mehan, M.S.; Jacquelyn Orlandino, M.S.; Ken Smith, Ph.D.; Cynthia Lewallen, M.S.; Donald Dicks, B.S.; Mary Jo Brasher, B.S.; Teresa Bull, B.S.; Katherine Dietzel, M.S.; S. Zyed Ali, Ph.D.; Daphne Ristau, B.S.; David Golz, B.S.
Date Published: 2010
Page Count: 223
Sponsoring Agency: National Institute of Justice (NIJ)
Washington, DC 20531
National Institute of Justice/NCJRS
Rockville, MD 20849
NCJRS Photocopy Services
Rockville, MD 20849-6000
Grant Number: 2006-DN-BX-K015
Sale Source: National Institute of Justice/NCJRS
Box 6000
Rockville, MD 20849
United States of America

NCJRS Photocopy Services
Box 6000
Rockville, MD 20849-6000
United States of America
Document: PDF
Type: Report (Study/Research)
Format: Document
Language: English
Country: United States of America
Annotation: This project investigated and developed less time-consuming methods for identifying and quantifying drugs in toxicology postmortem samples by using a liquid chromatograph/mass spectrometer/mass spectrometer (LC/MS/MS) in order to streamline this analysis.
Abstract: The project was successful in developing new methods for the analysis of delta-9-tetrahydrocannabinol (THC), THC metabolites, and opioids on an LC/MS/MS instrument platform following a simple 1-2 hour sample preparation and extraction step. By implementing these methods, laboratories have the capability of reducing labor time for sample preparation by up to 60 percent over more conventional methods such as solid phase or liquid-liquid extraction methods. The analytical methods developed in this project, however, require further validation prior to implementation into routine casework. The project also found that some drugs and metabolites present in whole blood specimens stored at normal refrigeration temperatures (4 degrees C) do degrade or decompose significantly over time. Having this knowledge is crucial when interpreting the results of testing that occurs months over even years after the sample is collected. Knowing that certain drugs degrade fairly rapidly in storage has significant implications for forensic laboratories with large backlogs or when testing may be delayed for other reasons. The instruments used for the research were the Applied Biosystems Models 2000 and 3200 QTRAP. Both of these instruments are triple quadrupole linear ion trap mass spectrometers. The project also involved the dissemination of the LC/MS/MS methods developed to forensic toxicologists from other forensic laboratories, using six hands-on practical workshops. 37 figures, 33 tables, and appended workshop training materials and presentations
Main Term(s): Criminology
Index Term(s): Autopsy; Chromatography; Crime laboratories; Drug analysis; Forensic sciences; Investigative techniques; Mass spectroscopy; NIJ final report; Toxic reactions
To cite this abstract, use the following link:

*A link to the full-text document is provided whenever possible. For documents not available online, a link to the publisher's website is provided. Tell us how you use the NCJRS Library and Abstracts Database - send us your feedback.