Results of a European proficiency test for the detection of streptomycin/dihydrostreptomycin, gentamicin and neomycin in milk by ELISA and biosensor methods

Then qualitative and quantitative analyses of the results were performed. Four parameters were calculated according to a reference publication for the validation of screening qualitative methods: false non-compliant and false compliant rates, sensitivity and specificity. A quantitative exploitation was also performed by calculating the assigned value for each material. Then the evaluation of laboratory's performance was carried out by calculating the accuracy and repeatability Z-scores.