skip navigation

PUBLICATIONS

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: 47527 Find in a Library
Title: LABORATORY PROFICIENCY TESTING PROGRAM - REPORT NO 6 DRUG ANALYSIS
Author(s): ANON
Corporate Author: Forensic Sciences Foundation Press
United States of America
Date Published: 1975
Page Count: 29
Sponsoring Agency: Forensic Sciences Foundation Press
Rockville, MD 20852
National Institute of Justice/
Rockville, MD 20849
US Dept of Justice

US Dept of Justice NIJ Pub
Washington, DC 20531
Grant Number: 74-NI-99-0048
Sale Source: National Institute of Justice/
NCJRS paper reproduction
Box 6000, Dept F
Rockville, MD 20849
United States of America
Document: PDF
Type: Statistics
Language: English
Country: United States of America
Annotation: ANALYSES OF A POWDER CONTAINING HEROIN AND COCAINE PERFORMED BY 179 FORENSIC LABORATORIES ARE REPORTED IN THE SIXTH OF A SERIES OF LABORATORY PROFICIENCY TESTS.
Abstract: THE LABORATORIES WERE SENT A WHITE POWDER SAMPLE, TOGETHER WITH THE INDICATION THAT THE SUBSTANCE WAS A 'STREET BUY' AND THAT THE AGENT NEEDED ALL THE QUALITATIVE AND QUANTITATIVE INFORMATION THE LABORATORY COULD PROVIDE. THE LABORATORIES WERE ALSO ASKED TO INDICATE THE METHODS USED TO ANALYZE THE SUBSTANCE. OF THE 179 RESPONDING LABORATORIES, 125 REPORTED CORRECTLY THAT THE POWDER CONTAINED HEROIN AND COCAINE; 52 IDENTIFIES ONLY HEROIN (SOME LOCAL LAWS MAKE IT UNNECESSARY FOR LABORATORIES TO PERFORM ADDITIONAL ANALYSIS AFTER ONE CONTROLLED SUBSTANCE HAS BEEN IDENTIFIED); 1 REPORTED ONLY COCAINE; AND 1 COULD NOT IDENTIFY THE POWDER. METHODS SUCH AS GAS CHROMATOGRAPHY/MASS SPECTROMETRY, EXTRACTION, AND GAS CHROMATOGRAPHY WERE USED MORE FREQUENTLY BY LABORATORIES THAT IDENTIFIED BOTH SUBSTANCES, WHEREAS MICROCRYSTALLINE TESTS WERE USED MORE FREQUENTLY BY LABORATORIES THAT IDENTIFIED ONLY HEROIN. DETAILS OF RESULTS, INCLUDING BREAKDOWNS OF METHODS AND FINDINGS FOR INDIVIDUAL LABORATORIES, ARE REPORTED IN 11 TABLES. INFORMATION ON SURVEY METHODS AND A COPY OF THE QUESTIONNAIRE ARE INCLUDED. OTHER PROFICIENCY SURVEYS INVOLVING DRUG ANALYSIS ARE REPORTED IN NCJ-47522 (BARBITURATES) AND 47536 (AMPHETAMINES). SURVEYS FOR OTHER SUBSTANCES ARE REPORTED IN NCJ 47523 - 47526, 47528 - 47535, AND 47537 - 47542. (LKM)
Index Term(s): Cocaine; Crime laboratories; Drug analysis; Evidence identification; Heroin; Surveys
To cite this abstract, use the following link:
http://www.ncjrs.gov/App/publications/abstract.aspx?ID=47527

*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.