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CFSAN/Office of Plant and Dairy Foods and Beverages
July 1999; Updated June 2003 and September 2004

Total Diet Study

Introduction

Structure of Elemental Analyses Files

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 digests indicate the US government's fiscal year in which the market basket was collected and the last 2 digits indicate the sequence collected within the fiscal year.
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. O = Total Diet Study food original analysis Q = Total Diet Study quality control analysis
5	Sample Qualifier	Codes used to provide additional definition of the type of sample. RAP = Replicate analytical portion UAP = Unfortified analytical portion FAP = Fortified analytical portion FAS = Fortified analytical solution MBK = Method blank FMB = Fortified method blank RM = Reference material OTH = Undefined sample qualifier not listed.
6	Replicate #	Indicates replicate number if more than one analysis performed. Replicates other than Anal Type=O reported with Anal Type=Q.
7	Element	Full name of the element determined.
8	Conc	Concentration of element found in analytical sample.
9	Unit	Unit of value 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. Applicable to Total Diet Study foods and reference materials.
11	LOD	Limit of detection for element in Total Diet Study food or reference material.
12	LOQ	Limit of quantification for element in Total Diet Study food or reference material.
13	Reference Material	Code for reference material when Sample Qualifier = RM.
14	QC Level	Concentration of the element associated with the quality control analysis (Anal Type = Q).
15	QC unit	Unit of value 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. NC = Not certified NFE = Not fortified with this element OTH = Other
18	Method	Reference to document describing analytical method.
19	Instrument	Abbreviation of analytical instrument used to determine element. GFAAS = Graphite furnace atomic absorption spectrometry HGAAS = Hydride generation atomic absorption spectrometry CVAAS = Cold vapor atomic absorption spectrometry ICPAES = Inductively coupled plasma atomic emission spectrometry
20	Batch ID	Analytical batch identification

Total Diet Study | Pesticides, Metals, Chemical Contaminants and Natural Toxins

FDA/Center for Food Safety & Applied Nutrition
Hypertext updated by dms/ear/las/dav September 28, 2004