4. AOACRIMicroMethods-2018Awards

26

Bird et al.: J ournal of AOAC I nternational V ol. 98, N o . 4, 2015  989

4 c NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA 5 c NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA 6 c + + + + + + + + + + + + + d + d + d + d + + + + + + d + + + d + d + d + d + + d + d + d + d + d + d + d 7 + + + + + + + + + + + + – – + – – – – – – + + + – – – – – – – – – – – – 10 + + + + + + + + + + + + – – – – + – + + – + + + – – – – – – – – – – – – 11 + + + + + + + + + + + + – – – + + + + – – – + + – – – – – – – – – – – – b 12 + + + d + + + + + + + + + + + + + + – + – – – – – – – – – – – – – – – – – 13 c + + + + + + + + d + d + + + + – + + d + d + d – – – – + + – – – – – – – – – – – – 14 + + + + + + + + + + + + + + – – + + + – – – – + – – – – – – – – – – – – 15 + + + + + + d + d + + + + + + – + + + + – + – – + – – – – – – – – – – – – – 16 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA AOAC OMA 993.12 1 + + + + + + + + + + + + – – – – + + – + – + + + – – – – – – – – – – – – 2 + + + + + + + + + + + + + + + – + + + – – – – + – – – – – – – – – – – – 3 + + + + + + + + + + + + – + + + – – – + + + + – – – – – – – – – – – – – 4 c NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA 5 c NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA 6 c + + + + + – + – – + – – – – – – – – + + – – – – – – – – – – – – – – – – 7 + + + + + + + + + + + + – + + + + + + + + – + + – – – – – – – – – – – – 8 + + + + + + + + + + + + + – + + + – – + – + – + – – – – – – – – – – – – 9 + + + + + + + + + + + + – – + + – – + + + + + + – – – – – – – – – – – – 10 + + + + + + + + + + + + + – – – + + + + + + – – – – – – – – – – – – – – 11 + + + + + + + + + + + + – – – + – – – + + – + + – – – – – – – – – – – – 12 + + + + + + + + + + + + – + – + – – + – – + – + – – – – – – – – – – – – 13 c + + + + + + + + + + + + – + + + – + – + + + – – – – – – – – – – – – – –

Table 3. Individual collaborator results for full-fat cottage cheese (4% milk fat) a High-level test portions Low-level test portions Uninoculated test portions Lab 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 3M MDA Listeria monocytogenes 1 + + + + + + + + + + + + – b + + – – + + – – – + – – – – – – – – – – – – – 2 + + + + + + + + + + + + + – – + + + – – – + + + – – – – – – – – – – – – 3 + + + + + + + + + + + + – b – – – – + + + + + + + – – – – – – – – – – – – 8 + + + + + + + + + + + + + + + + – + – – – – + + d – – – – – – – – – – – – 9 + + + + + + + + + + + + + + – – – + + – – – – – – – – – – – – – – – – –

14 + + + + + + + + + + + + + + – – – + + + – – – + – – – – – – – – – – – – 15 + + + + + + + + + + + + – + – – – – + + + – – + – – – – – – – – – – – – 16 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA a  + = L. monocytogenes were detected in samples; – = L. monocytogenes were not detected in sample; NA = Laboratory did not participate in this matrix or results were not received. b  Sample was presumptive positive on 3M MDA Listeria monocytogenes but confirmed negative indicating a false-positive result. c  Results were not used in statistical analysis due to laboratory error. d  Sample was presumptive negative on 3M MDA Listeria monocytogenes but confirmed positive indicating a false-negative result.

03/10/2019