External Quality Assurance System (EQAS)

Participation in internal and external quality assurance systems is a useful tool for production of reliable laboratory results of consistently good quality.

Descriptions of the EQAS​

The National Food Institute, a WHO Collaborating Centre and one of the coordinating agencies of WHO GFN, is responsible for conducting the WHO GFN EQAS for Salmonella serotyping and antimicrobial susceptibility testing (AST).

This programme is developed specifically for national reference laboratories participating in the WHO GFN, and runs annually. Laboratories participating in the EQAS receive the strains by mail. The strains should be tested by the methods routinely used in the laboratory and the results should then be submitted to DTU Food through a web-based database (password-protected). Immediately upon receiving the results, an evaluation report will be generated for you.

Full anonymity is ensured; only DTU Food and the WHO GFN Regional Centre in your region will be given access to your results. When the results of each cycle of the EQAS have been evaluated, a final summary report is prepared and distributed to all participating laboratories.

Various aspects of the proficiency test scheme may from time to time be subcontracted. When subcontracting occurs it is placed with a competent subcontractor and the National Food Institute is responsible to the scheme participants for the subcontractor's work.

EQAS reports


EQAS Report - 2017

(PDF document, 2.6 MB)


EQAS Report - 2015

(PDF document, 1.6 MB)


EQAS Report - 2014

(PDF document, 1.9 MB)


EQAS Report - 2013

(PDF document, 1.6 MB)


EQAS Report - 2012

(PDF document, 2.3 MB)


EQAS Report - 2010

(PDF document, 1.7 MB)


EQAS Report - 2009

(PDF document, 2 MB)


EQAS Report - 2008

(PDF document, 1.3 MB)


EQAS Report - 2007

(PDF document, 1 MB)


EQAS Report - 2006

(PDF document, 520 KB)


EQAS Report - 2004

(PDF document, 400 KB)


EQAS Report - 2003

(PDF document, 250 KB)


EQAS Report - 2002

(PDF document, 50 KB)


EQAS Report - 2001

(PDF document, 140 KB)


EQAS Report - 2000

(PDF document, 134 KB)

Eligibility to participate

The WHO GFN EQAS is open to all national reference laboratories in the Global Foodborne Infections Network.​


Participation in the EQAS is free of charge for laboratories participating in the GFN. However, if your country claims taxes or customs fees this will be on the participating laboratory's expenses.

How to participate

Sign-up for the WHO GFN EQAS 2019 is now open and deadline is 23 August 2019. A prenotification with further information has been circulated. Please contact the EQAS Coordinator (suska(at)food.dtu.dk) for further information. 

Information regarding WHO GFN EQAS 2019

Bacterial cultures will be shipped in November 2019. By this time, specific protocol and materials regarding the 2019 iteration of the WHO GFN EQAS will be available for download below. 

Database for result submission as well as to browse results from previous EQAS iterations can be accessed in the database through this link: http://eqas.food.dtu.dk/who (restricted access, username/password is required)

Protocol (text)


Protocol for WHO EQAS 2018

(PDF document, 150 KB)

Protocol (test forms)


Test forms for WHO EQAS 2018

(Word document, 0.5 MB)

Subculture and Maintenance of Quality Strains

Instructions for Opening and Reviving Lyophilised Cultures


​Information presented on this website is considered public information (unless otherwise noted) and may be distributed or copied. Use of appropriate byline/photo/image credit is requested. While The National Food Institute makes every effort to provide accurate and complete information, various data such as names, telephone numbers, etc. may change prior to updating. The National Food Institute welcomes suggestions on how to improve our home page and correct errors. The National Food Institute provides no warranty, expressed or implied, as to the accuracy, reliability or completeness of furnished data.

Some of the documents on this server may contain live references (or pointers) to information created and maintained by other organizations. Please note that The National Food Institute does not control and cannot guarantee the relevance, timeliness, or accuracy of these outside materials.


Technical University of Denmark, National Food Institute

CVR: 30060946



DK-2800 Lyngby

Kemitorvet Building 204​

Contact us

Tlf.: +45 3588 6601

E-mail: suska@food.dtu.dk