Document - FAVV

Evaluation of immunoassay kits for determination of ochratoxin A in cerealsTable 21: Intra-run repeatabilityCharm SciencesConc (ng/g) Run N Rec% Mean Rec% CV% SQR CV% Ucomb k=2 (%)1 1 21 65 88 47.5 41.7 87.12 21 110 35.05 1 21 100 100 11.7 12.5 25.12 21 100 13.310 1 21 95 89 8.0 8.9 28.02 21 84 9.8EuroproximaConc (ng/g) Run N Rec% Mean Rec% CV% SQR CV% Ucomb k=2 (%)2 1 6 95 / / / /10 1 6 91 / / / /50 1 6 73 / / / /LCTechConc (ng/g) Run N Rec% Mean Rec% CV% SQR CV% Ucomb k=2 (%)1.23 1 8 253 / / / /2 8 214 / / / /5.31 1 8 137 / / / /2 8 131 / / / /10.4 1 8 120 / / / /2 8 125 / / / /R-BiopharmConc (ng/g) Run N Rec% Mean Rec% CV% SQR CV% Ucomb k=2 (%)3 1 6 92 99 7.9 10.8 21.72 6 105 13.05 1 6 83 96 9.0 7.6 17.32 6 109 6.015 1 6 80 89 2.3 5.3 24.42 6 98 7.1RomerlabsConc (ng/g) Run N Rec% Mean Rec% CV% SQR CV% Ucomb k=2 (%)10 1 3 94 97 3.0 2.7 8.12 3 101 3.03 3 96 2.030 1 3 106 107 3.0 2.5 14.32 3 109 1.03 3 105 3.03.1.4.6.2 Inter-run repeatability (same batch/different operator)In general the extended measurement uncertainty is below 40% (Table 22). If the measurement uncertainty iscompared (Table 21 versus Table 22), the variability increases if different operators perform the test.3-26 Administrative evaluation | CODA-CERVA