Analysis of quinolone antibiotics in eggs: Preparation and characterization of a raw material for method validation and quality control

► There are not reference materials for the analysis of veterinary drugs in eggs. ► The use of quinolones is banned in laying hens. ► A quality control material for the analysis of quinolones in eggs has been developed. ► Its homogeneity and stability at different temperatures have been studied. ► A proficiency test has been organized to demonstrate the suitability of the material.