Total Diet Study - Structure of Elemental Analyses Files
CFSAN/Office of Analytics and Outreach
July 1999; Updated June 2003; September 2004 and January 2011.
Note: Only records for analysis type "O" (original) should be used when reviewing or using the analytical results. All other records (analysis type "Q") are quality control results.
|Field Order||Field Name||Field Description|
|1||MB||Total Diet Study market basket designation represented by a 6-digit number. The first 4 digits indicate the fiscal year and the last 2 digits indicate the specific market basket (01 through 04) in which the sample was collected.|
|2||Food No||Number designation of a Total Diet Study food. Field is blank for samples that are not Total Diet Study foods.|
|3||Food Name||Name of the Total Diet Study food. Field is blank for samples that are not Total Diet Study foods.|
|4||Anal Type||Analysis type.
|5||Sample Qualifier||Codes used to provide additional definition of the type of sample.
|6||Replicate #||Indicates replicate number if more than one analysis performed.|
|7||Element||Full name of the element determined.|
|8||Conc||Concentration of the element found in the original sample analysis (Anal Type = O).|
|9||Unit||Unit of the value reported in Conc, LOD, and LOQ fields.|
|10||Trace||Contains 'TR' if the value in Conc field is greater than or equal to the limit of detection and less than the limit of quantification.|
|11||LOD||Limit of detection.|
|12||LOQ||Limit of quantification.|
|13||Reference Material||Code for reference material when Sample Qualifier = RM.|
|14||QC Level||Concentration of the element found in the quality control analysis (Anal Type = Q).|
|15||QC unit||Unit of the value reported in QC Level field.|
|16||QC% Recvd||Percent recovery of element associated with quality control analysis (Anal Type = Q) if applicable.|
|17||Result Qualifier and Remarks||Result qualifier and any associated remark.
|18||Method||Reference to document describing analytical method.|
|19||Instrument||Abbreviation of analytical instrument used to determine element.
|20||Batch ID||Analytical batch identification|
This document was originally issued July 1999; and Updated June 2003, July 2004, October 2009, and January 2011.