– the intergovernmental organization through which Member States act together
     on matters related to measurement science and measurement standards.
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Joint Committee for Traceability in Laboratory Medicine (JCTLM)
Joint Committee:
  JCTLM – Joint Committee for Traceability in Laboratory Medicine
  JCTLM Executive Committee

JCTLM Working Groups:
  JCTLM-WG1: Reference Materials and Reference Procedures
  JCTLM-WG2: Reference Measurement Laboratories
The JCTLM was created in 2002 through a Declaration of Cooperation between the International Committee of Weights and Mesures (CIPM), the International Federation for Clinical Chemistry and Laboratory Medicine (IFCC), and the International Laboratory Accreditation Cooperation (ILAC) in response to the implementation of the European Community Directive 98/79/EC on in vitro medical devices. The Declaration of Cooperation was revised in 2012, following the revision of harmonized standards relating to higher order reference materials and methods.

The JCTLM Executive Committee oversees the operations of the JCTLM, and its Working Group 1 and Working Group 2 establish lists of available higher order reference materials, measurement procedures/methods and measurement laboratory services with respect to the technical basis laid down in the JCTLM Framework.

Dr Gary Myers
    American Association for Clinical Chemistry
    1850 K Street, Suite 625
    Washington, DC 200065
    United States of America
Dr Robert Wielgosz
    Bureau International des Poids et Mesures
    Pavillon de Breteuil
    F-92312 SÈVRES CEDEX


The presentations given at the following meetings are openly available:

The presentations given at the following workshops can be downloaded by participants (username and password required):

JCTLM Members' and Stakeholders' Meeting:

30 November to 1 December 2015 at the BIPM
Dr Robert Wiegosz   BIPM

The two days of meeting will be split into five sessions:

  • Session 1: Update on JCTLM activities
  • Session 2: JCTLM Member activities
  • Session 3: Developments in Traceability Requirements around the Globe
  • Session 4: Identifying future priorities in Traceability in Laboratory Medicine
  • Session 5: New Challenges for Traceability in Laboratory Medicine

In addition to invited presentations for session 3, 4 and 5 we are happy to announce an open call for presentation proposals for these sessions.

A presentation proposal title should be accompanied by a short abstract and sent by email before 5 September 2015 indicating for which session the proposal is intended.

Registration for the meeting will open mid-September, and in the meantime expressions of interest in the meeting can be sent by email.

Metrological approaches to purity determination for Primary Reference Materials:

Criteria for nominated nucleic acid reference materials:

Traceability Statements - References to the JCTLM:

  • JCTLM-EXEC/15-03, 2015, 2 pp
    This document provides advice to manufacturers and others on the appropriate manner to make reference to JCTLM - listing of reference materials, methods and services in any documentation in which information on metrological traceability is included.
  Next meetings:
30 November to 1 December 2015: Meeting of JCTLM Members and Stakeholders
2 December 2015: Meeting of the JCTLM Working Groups
3–4 December 2015: Meeting of the JCTLM Executive Committee