» Publications relating to accreditation of Laboratories

To gain accreditation, a laboratory must be fully conversant and comply with either of the relevant standards, which are:

ISO/IEC 17025:2005

General requirements for the competence of testing and calibration laboratories (SUPERSEDED - will cease to be valid from 1 June 2021)

ISO/IEC 17025:2017

General requirements for the competence of testing and calibration laboratories (published November 2017)

ISO 15189:2012 Medical laboratories - Requirements for quality and competence

For further information on the transition from ISO/IEC 17025:2005 to ISO/IEC 17025:2017, please see;


Joint ISO ILAC IAF Communiqué - ISO/IEC 17025

Joint ISO-ILAC-IAF Communiqué on the Management System Requirements of ISO/IEC 17025, General Requirements for the competence of testing and calibration laboratories

ISO/ILAC Communiqué

Communiqué for laboratories to provide to purchasers to demonstrate that ISO/IEC 17025:2005 and ISO/IEC 17025:2017 remain valid during the three-year transition

Joint ISO-ILAC-IAF Communiqué

Joint ISO-ILAC-IAF Communiqué on the Management System Requirements of ISO/IEC 15189:2012 - Medical Laboratories - Particular requirements for quality and competence


Publications that provide guidance on meeting these requirements in specific areas are listed in UKAS Publications List (M4) which can be accessed via the Publications home page. It is the responsibility of laboratories to obtain and maintain current their own copies of the relevant standards.

UKAS laboratory publications (the LAB series) give guidance in the form of extra information, detail and specific limitations with respect to the application of the requirements of ISO/IEC 17025 and ISO 15189. By following this guidance, laboratories will be able to demonstrate at assessment that they meet the relevant requirements. However, a laboratory may use alternative defined methods, provided that they are shown to give an equivalent outcome.

Note: Not all publications will be relevant to a laboratory's ISO 15189 application, and some relevant publications may not necessarily reference ISO 15189 within the text. However, where applicable to the scope of a laboratory's activity, they remain critical guidance in the application of the requirements of ISO 15189.

UKAS Publications
LAB 1 Reference to Accreditation for Laboratories (Edition 6, October 2018)
LAB 5 Reporting Calibration Results (Edition 3, January 2019)

LAB 11

Traceability of Temperature Measurement: Platinum Resistance Thermometers, Liquid-in-glass Thermometers and Radiation Thermometers (Edition 4, November 2012)

LAB 12 The Expression of Uncertainty in Testing (Edition 3, November 2019)
LAB 13

UKAS Guidance on the Application of ISO/IEC 17025:2017 Dealing with Expressions of Opinions and Interpretations (Edition 3, April 2019)

LAB 14 Guidance on the calibration of weighing machines used in testing and calibration laboratories (Edition 6, October 2019)
LAB 15 Traceability: Volumetric Apparatus (Edition 3, April 2019)
LAB 22 Traceability: Test Sieves (Edition 3, May 2017)
LAB 23 Traceability for Equipment used in Acoustical Testing (Edition 2, January 2007)
LAB 24 Measurement of Traceability and Calibration in the Mechanical Testing of Metallic Materials (Nov 2000)
LAB 25 Traceability of Hardness Measurements (Edition 3, September 2019)
LAB 26

Calibration of Radionuclide Sources: Activity, Particle or Photon Emission Rate, Air Kerma Rate (Edition 3, February 2018)

LAB 30

Application of ISO/IEC 17025 for Asbestos Sampling and Testing (Edition 3, January 2015)

LAB 31

Use of Culture Media Procured Ready-To-Use or Partially Completed, Including Diagnostic Kits, In Microbiological Testing (Edition 3, March 2019)

LAB 32 Accreditation for Suppliers to the UK National DNA Database (Edition 5, October 2018)

LAB 36

Laboratory Accommodation and Environment in the Measurement of Length, Angle and Form (Edition 4, October 2019)
LAB 37

Accreditation Requirements for Sampling and Testing in Accordance with the Drinking Water Testing Specification (DWTS) (Edition 4, February 2020)

LAB 45 Schedules of Accreditation for Calibration Laboratories (Edition 2, January 2019)
LAB 46

UKAS Policy for Participation in Measurement Audits and Interlaboratory Comparisons (Edition 4, May 2019)

LAB 48

Decision Rules and Statements of Conformity (Edition 3, June 2020)

M3003 The Expression of Uncertainty and Confidence in Measurement (Edition 4, October 2019)
TPS 25

Rolling Straight Edge - The Measurement of Surface Regularity of Road Pavement Surfaces - Calibration Requirements (Edition 5, March 2008)

TPS 37
Simplified Test Reports (Edition 5, October 2020)
TPS 38

The Implementation of EURAMET Calibration Guide No. 13 Guidance on Calibration of Temperature Block Calibrators (Edition 5, October 2019)

TPS 41
UKAS Policy on Metrological Traceability (Edition 5, October 2019)
TPS 47
UKAS Policy on Participation in Proficiency Testing (Edition 4, February 2020)
TPS 49

Interim Arrangements and guidance on the interpretation of IEC 61672 Sound Level Meters - Periodic Tests (Edition 2, June 2009)

TPS 53

Management system requirements of laboratories (ISO/IEC 17025 and ISO 15189) and inspection bodies (ISO/IEC 17020) - Statements for use on test, examination, calibration and inspection reports/certificates (Edition 2, June 2017)

TPS 54

UKAS Policy on Traceability of Calibration Gas Standards used in Stack Emission Monitoring (Edition 3, April 2019)

TPS 57
UKAS Policy on Selection and Use of Reference Materials (Edition 4, June 2020)
TPS 63
UKAS Policy on Deviating Samples (Edition 2, December 2019)
Relevant Mandatory European and International Publications
EA-4/02 M: 2013 Evaluation of the Uncertainty of Measurement in Calibration
EA-4/17 M: 2008 EA position paper on the description of scopes of accreditation of medical laboratories
ILAC-P10:01/2013 ILAC Policy on the Traceability of Measurement Results - SUPERSEDED BY ILAC-P10:07/2020 (see below)
ILAC-P10:07/2020 ILAC Policy on Traceability of Measurement Results - implementation date July 2021
ILAC-P14:01/2013 ILAC Policy for Uncertainty in Calibration - SUPERSEDED BY ILAC-P14:09/2020 (see below)
ILAC-P14:09/2020 ILAC Policy for Uncertainty in Calibration - implementation date March 2021
Relevant European and International Guidance Documents
ILAC-G7:02/2016 Accreditation Requirements and Operating Criteria for Horseracing Laboratories
ILAC-G8:09/2019 Guidelines on Decision Rules and Statements of Conformity
ILAC-G19:08/2014 Modules in a Forensic Science Process
ILAC-G26:11/2018 Guidance on Implementation of a Medical Accreditation Scheme

For all relevant publications, including guidance documents, please see the publications pages of the EA and ILAC websites.


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