» 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 17025:2017
General requirements for the competence of testing and calibration laboratories

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

Transition to new version in progress - deadline 1st December 2020.


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 17021-1:2015

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


ISO 17034:2016 (replacing ISO Guide 34:2009 - Deadline November 2019)
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


ISO 22870:2016 (in conjunction with ISO 15189:2012)

Point-of-care testing (POCT) - Requirements for quality and competence


available on relevant organisation's website:


NB: These International Standards are used as part of the requirements for accreditation, so you maybe wondering how to do this while respecting its copyright? Copyright allows IEC and ISO to safeguard the use of the content of International Standards so that the integrity and authenticity of that content is preserved, and that content can be revised, translated and also maintained.

This means that customers and other stakeholders can always trust that they’re getting the real value when using standards from IEC, ISO and their respective national members. The IAF, ILAC and ISO strongly encourage everyone to respect copyright of all international standards and only use those copies which meet the copyright requirements.


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


The accreditation of imaging services to the QSI standard



The accreditation of physiological services to the IQIPS standard


For further information: