Food and Feed Safety News

How Proficiency Testing Can Foster Quality Assurance

Gaussian Distribution.jpg

Any laboratory can report results, but how can you be sure of the quality of those results? It’s a question customers should ask of any laboratory providing results: “How do I know my results are correct?” Laboratory inspections, which include checking a lab’s procedures and equipment, are one piece of the puzzle. The other less commonly looked at piece is a lab’s proficiency testing results.

What is proficiency testing?

Proficiency tests, also referred to as “round robin tests” or “ring trials”, are intended to check the actual analytical performance of a laboratory. Identical samples are sent out to laboratories who have actively decided to participate in a PT round or scheme. All of the participants individually analyze the samples and results are collected in a designated time frame. At this point, a statistical analysis will be performed by the PT round provider to evaluate the accuracy of the laboratories. According to DIN EN ISO/IEC 17025, accredited testing laboratories must participate in proficiency testing regularly in order to ensure the quality of their analyses.

How can I take part in a proficiency testing round?

Laboratories looking to participate in a proficiency testing round should contact an approved PT provider. An approved PT provider will be accredited according to standard DIN EN ISO/IEC 17043. The India facility of Trilogy Analytical Laboratory is accredited (2016) according to standard ISO/IEC 17043 ( Trilogy India offers proficiency tests for numerous parameters in food analyses, including mycotoxins, microorganisms, and drug residues.

To view a list of upcoming PT rounds, please visit us at:

New Call-to-action


Share on Social Media: