AOACRIMicroMethods-2017Awards

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1000 Bird et al.: Journal of AOAC International Vol. 98, No. 4, 2015
Table 2. 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
1
+ + + + + + + + + + + + –
c
+ + – – + + – – – + –
– – – – – – – – – – – –
2
+ + + + + + + + + + + +
+ – – + + + – – – + + +
– – – – – – – – – – – –
3
+ + + + + + + + + + + + –
c
– – – – + + + + + + +
– – – – – – – – – – – –
4
b
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
b
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
b
+ + + + + + + + + + + + +
d
+ d
+
d
+
d
+ + + + + +
d
+ + +
d
+
d
+
d
+
d
+ +
d
+
d
+
d
+
d
+
d
+
d
+ d
7
+ + + + + + + + + + + +
– – + – – – – – – + + +
– – – – – – – – – – – –
8
+ + + + + + + + + + + +
+ + + + – + – – – – + +
– – – – – – – – – – – –
9
+ + + + + + + + + + + +
+ + – – – + + – – – – –
– – – – – – – – – – – –
10
+ + + + + + + + + + + +
– – – – + – + + – + + +
– – – – – – – – – – – –
11
+ + + + + + + + + + + +
– – – + + + + – – – + +
– – – – – – – – – – – –
c
12
+ + + + + + + + + + + +
+ + + + + – + – – – – –
– – – – – – – – – – – –
13
b
+ d
+ d
+ d
+ d
+ d
+ d
+ d
+ + +
d
+ d
+ d
+
d
– +
d
+ + + – – – – + +
– – – – – – – – – – – –
14
+ + + + + + + + + + + +
+ + – – + + + – – – – +
– – – – – – – – – – – –
15
+ + + + + + + + + + + +
+ – + + + + – + – – + –
– – – – – – – – – – – –
AOAC OMA
993.12
1
+ + + + + + + + + + + +
– – – – + + – + – + + +
– – – – – – – – – – – –
2
+ + + + + + + + + + + +
+ + + – + + + – – – – +
– – – – – – – – – – – –
3
+ + + + + + + + + + + +
– + + + – – – + + + + –
– – – – – – – – – – – –
4
b
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
b
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
b
+ + + + + – + – – + – –
– – – – – – + + – – – –
– – – – – – – – – – – –
7
+ + + + + + + + + + + +
– + + + + + + + + – + +
– – – – – – – – – – – –
8
+ + + + + + + + + + + +
+ – + + + – – + – + – +
– – – – – – – – – – – –
9
+ + + + + + + + + + + +
– – + + – – + + + + + +
– – – – – – – – – – – –
10
+ + + + + + + + + + + +
+ – – – + + + + + + – –
– – – – – – – – – – – –
11
+ + + + + + + + + + + +
– – – + – – – + + – + +
– – – – – – – – – – – –
12
+ + + + + + + + + + + +
– + – + – – + – – + – +
– – – – – – – – – – – –
13
b
+ + + + + + + + + + + +
– + + + – + – + + + – –
– – – – – – – – – – – –
14
+ + + + + + + + + + + +
+ + – – – + + + – – – +
– – – – – – – – – – – –
15
+ + + + + + + + + + + +
– + – – – – + + + – – +
– – – – – – – – – – – –
a+ =
Listeria
species were detected in samples; – =
Listeria
species were not detected in sample; NA = laboratory did not participate in this matrix or results were not received.
bResults were not used in statistical analysis due to laboratory error.cSample was presumptive positive on 3M MDA
Listeria
but confirmed negative indicating a false-positive result.
dSample was presumptive negative on 3M MDA
Listeria
but confirmed positive indicating a false-negative result.