» Accreditation Standards

UKAS is appointed by Government as the sole national accreditation body under the terms of SI 2009/3155, to deliver accreditation against the following harmonised international standards.

European and International Standards

Accreditation Guidance
(*see Note)

ISO/IEC 17025:2005
General requirements for the competence of testing and calibration laboratories


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


ISO/IEC 17020:2012
Conformity assessment - Requirements for the operation of various types of bodies performing inspection

ILAC - P15:07/2016


ISO/IEC 17065:2012
General requirements for bodies operating product certification systems


ISO 14065:2013
Greenhouse gases -- Requirements for greenhouse gas validation and verification bodies for use in accreditation or other forms of recognition

IAF MD 6:2014

ISO/IEC 17024:2012
General requirements for bodies operating certification of persons


ISO/IEC 17043:2010

Conformity Assessment - General requirements for proficiency testing


ISO/IEC 17021:2011** (ISO/IEC 17021-1:2015) 

Conformity assessment - Requirements for bodies providing audit and certification of management systems


ISO Guide 34:2009
General requirements for competence of reference material producers


ISO 15195: 2003 (In conjunction with ISO/IEC 17025:2005)
Laboratory medicine - Requirements for reference measurement laboratories


available on relevant organisation's website:


**These standards have recently been revised and reissued by ISO & IEC and UKAS are in the process of implementing transition arrangements.


UKAS also provides accreditation to the following standards that are not harmonised, (not covered by European Regulation):


The accreditation of imaging services to the ISAS standard


ISO Guide 34

The accreditation of reference material producers



The accreditation of physiological services to the IQIPS standard


For further information:

  • Copies of Standards can be obtained from national Standards bodies (in the UK, BSI Tel: 0208 996 9001).
  • For information about organisations registered to ISO 9000 and ISO 14000, consult the QA Register.
  • See Route to Accreditation for information about the process, estimated costs and timescales
  • For more information contact UKAS on 01784 429000 or email info@ukas.com
  • What can be accredited?