Ejemplos De Drogas (Onu)

Vienna International Centre, PO Box 500, 1400 Vienna, Austria
Tel.: (+43-1) 26060-0, Fax: (+43-1) 26060-5866, www.unodc.org

Guidelines on
Representative Drug Sampling

FOR UNITED NATIONS USE ONLY

United Nations publication
ISBN 978-92-1-148241-6
Sales No. E.09.XI.13
ST/NAR/38

Printed in Austria
*0980042*
V.09-80042—April 2009—330

For use by NatioNal Drug aNalysis laboratoriesPhoto credits:
UNODC Photo Library

Laboratory and Scientific Section
United nationS office on drUgS and crime
Vienna

Guidelines on Representative
Drug Sampling
in cooperation with the

Drugs Working Group
of the
European Network of Forensic Science Institutes

UNITED NATIONS
New York, 2009

ST/NAR/38

UNITED NATIONS PUBLICATION
Sales No. E.09.XI.13
ISBN978-92-1-148241-6

This publication has not been formally edited.

Acknowledgements
The present guidelines on representative drug sampling were developed by the Drugs
Working Group (WG) of the European Network of Forensic Science Institutes
(ENFSI).
They represent the result of an extensive consultation process among European drugs
experts over the course of the years 2001-2003.
The Laboratory andScientific Section of the United Nations Office on Drugs and
Crime is grateful about the agreement reached in 2007 with the ENFSI Drugs WG
to publish these guidelines substantially unchanged* with the aim of making them
available to a wider, international audience.
The list of contributors to the original ENFSI publication is included on page iv.
UNODC’s Laboratory and Scientific Section alsowishes to acknowledge the contributions of Dr. Reinoud Stoel, Netherlands Forensic Institute, to the validation of
the tables and software.

* Changes have been made in chapter 1 (introduction) to adapt it for international use. The ENFSI
foreword was replaced by the above acknowledgements. Tables and software were validated and relevant
corrections made. An application for estimating tabletnumbers was included in the software. The rest
of the guidelines remained substantially unchanged.

iii

List of contributors
Sergio Schiavone
(Chairman of the Sampling Subgroup of the ENFSI WG Drugs)
Raggruppamento Carabinieri Investigazioni Scientifiche,
Reparto di Roma, Sezione di Chimica
Via Aurelia 511, 00165 Roma, Italia
Phone 0039-06-66394656,
Fax 0039-06-66394748,
E-mail:s.schiavone@tin.it
Martine Perrin
Institut de Recherche Criminelle de la Gendarmerie Nationale,
Department Toxicologie
1, Boulevard Theophile Sueur, F-93111, Rosny Sous Bois Cedex, France
Phone 0033-1-49355079,
Fax 0033-1-49355027,
E-mail: tox.ircgn@gendarmerie.defense.gouv.fr
Hugh Coyle
(also macro development)
Forensic Science Laboratory
Department of Justice, Equality and Law Reform,Garda Headquarters,
Phoenix Park, Dublin 8, Ireland
E-mail: HJCoyle@fsl.gov.ie
Henk Huizer
Netherlands Forensic Institute
Volmerlaan 17, 2288 GD Rijswijk, Netherlands (till Oct 15th, 2004)
E-mail: h.huizer@nfi.minjus.nl
Annabel Bolck
Netherlands Forensic Institute
Volmerlaan 17, 2288 GD Rijswijk, Netherlands (till Oct 15th, 2004)
E-mail: a.bolck@nfi.minjus.nl
Bruno CardinettiRaggruppamento Carabinieri Investigazioni Scientifiche,
Reparto di Roma, Sezione di Balistica
Via Aurelia 511, 00165 Roma, Italia
Phone 0039-06-66394668,
Fax 0039-06-66394748,
E-mail: card.bruno@italymail.com
iv

Contents
Page

1.

INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1

2.

DEFINITIONS . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . .

3

3.

REPRESENTATIVE SAMPLING TECHNIQUES . . . . . . . . . . . . . . . . . .

7

4.

ARBITRARY SAMPLING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

9

5.

STATISTICAL SAMPLING METHODS . . . . . . . . . . . . . . . . . . . . . . . . . .

11

6.

CONSIDERATIONS AND RECOMMENDATIONS. . ....