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3M Molecular Detection Assay Salmonella Collaborative Study
July 2012
OMA-2012-July-XXX
5. Report all of your results as soon as analyses are completed. Do not do more or less than
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indicated in the instructions. For example, do not do duplicate analysis and report the best or
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average result. More or fewer results complicate the statistical analyses and may invalidate your
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results. Data sheets are provided with these instructions and indicate which results are to be
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reported. Please include any criticisms, suggested improvements, or general comments about the
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3M Molecular Detection Assay
Salmonella
on the Collaborators’ Comments Form provided.
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Any results that were derived from modified protocols should be included but must be separated
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from the main report. Results and comments should be returned to the Study Director
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immediately upon completion of each portion of the study.
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Information about this Collaborative Study
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Shipment Schedule
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Test portions will be shipped by overnight express courier to arrive the day before initiation of
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analysis. If the test portions do not arrive by the normal delivery time one day prior to analysis,
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please contact a co-Study Director. All test portions will be shipped refrigerated.
Analysis of
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test portions must be initiated on the day scheduled by the Study Director. Test kits and
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enrichment medium will be sent directly from 3M.
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Proposed analysis schedule
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Food
Date Shipped
Date Tested
Wet dog food
TBD*
TBD
Raw ground beef
TBD
TBD
*To be completed by coordinating laboratory
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Test Portion Receipt
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Note condition of package on the data sheets and notify the Study Director if any packages
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appear to have been compromised or if the food product does not arrive in the appropriate
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condition. All refrigerated products should arrive cold to the touch and should be stored at 4
°
C
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(refrigerated) until the day of analysis.
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Test Portion Analysis
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Collaborators will be provided with enough sample to test each matrix using the 3M Molecular
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Detection Assay
Salmonella
method and the appropriate reference method. For raw ground beef
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they will receive approximately 60g as they will need to prepare one test portion (25g) to be
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tested via the 3M Molecular Detection Assay
Salmonella
method
, and the other test portion
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(25g) to be tested via the USDA/FSIS MLG reference method. For wet dog food they will
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receive two sets of test portions: 36 x 375g (3M) and 36 x 25g (BAM). See Appendices 8.5-8.6
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for detailed instructions on analysis. Please review the reference methods carefully before
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initiating analysis.
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DRAFT DOCUMENT
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