Trust is good, but control is better: Even laboratories in the QS scheme are regularly checked. Only laboratories that have successfully completed a comprehensive approval procedure are permitted to conduct feed analyses for QS. To ensure consistently high and comparable quality, they also participate in annual laboratory performance assessments. Once a year, QS specifically assesses the analytical competence of the laboratories involved in feed monitoring. In 2025, a total of 47 QS-approved laboratories from eight European countries took on this analytical challenge—the test focused on the mycotoxin analysis.

You can find an overview of the laboratory performance assessment here (only available in german).