Proficiency testing (PT) of microbiological laboratories

The National Food Agency in Sweden has been organizing proficiency testing schemes for laboratories performing microbiological analyses in drinking water and food for many years. By participating in PT schemes, laboratories get an external evaluation of their skill and their results in comparison with the other participants. All laboratories fulfilling and accepting the terms and conditions of the PT are welcome to participate.

In order to get a better evaluation of the results obtained, the laboratories must register the methods they use and how they use them. The information is used for grouping of the results of a particular analysis to show possible differences between methods.

Currently on the agenda - Drinking water scheme

  • September 2022: The final report is available under "Info & reports" after login. (11/16/2022)
    • The are shown under "Processed results" after logging in.
  • January (March) 2022: The final report is available under "Info & reports" after logging in. (3/7/2022)
    • The final results are also shown under "Processed results" after logging in.
  • An updated scheme protocol is available under the tab General information. (1/20/2022)
  • Follow-up samples can be ordered on the webpage: www.livsmedelsverket.se/en/PT-extra. (10/6/2021)

Currently on the agenda - Food scheme

  • October 2022: The final report is available under "Info & reports" after logging in. (11/28/2022)
  • It is time to check your registation for the PT round April 2023. (11/28/2022)
    • The last day to register/unregister is 5th February, 2023
  • April 2022: The final report is available under "Info & reports" after login. (6/7/2022)
    • The are shown under "Processed results" after logging in.
  • Follow-up samples can be ordered on the webpage: www.livsmedelsverket.se/en/PT-extra. (6/7/2022)
  • An updated scheme protocol is available under the tab General information. (1/20/2022)

Currently on the agenda - Reference materials for internal control

  • The reference materials (RM) are manufactured and checked in the same manner as the test items for PT, but the handling of the RM:s is not specifically accredited.