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VIDAS LMX & LPT Collaborative Study
April 19, 2013
OMA-2013-Apr-XXX
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Table 1. Overview of Study Design
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WEEK MATRIX
VIDAS
Method
Inoculating
organism
Target
Contamination
Levels
# Test
Portions
(per method)
Test Portion
Codes
Reference
Method
1
Soft
Mexican
Cheese
25g
LMX
-LMX broth-
L. mono
-heat stressed-
0 cfu/test portion
12
Random number
between 100-199
AOAC
993.12
0.2-2 cfu/test portion
12
2-5 cfu/test portion
12
2
Soft
Mexican
Cheese
25g
LPT
-LPT broth-
L. innocua
-heat stressed-
0 cfu/test portion
12
Random number
between 200-299
AOAC
993.12
0.2-2 cfu/test portion
12
2-5 cfu/test portion
12
3
Soft
Mexican
Cheese
125g
LMX &
LPT
-LPT broth-
L. mono
-heat stressed-
0 cfu/test portion
12
Random number
between 300-399
AOAC
993.12
0.2-2 cfu/test portion
12
2-5 cfu/test portion
12
DRAFT DOCUMENT
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