Evidence Based Medicine on FHIR Implementation Guide, published by HL7 International / Clinical Decision Support. This guide is not an authorized publication; it is the continuous build for version 1.0.0-ballot2 built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/HL7/ebm/ and changes regularly. See the Directory of published versions

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: NHANES LBXGLU Variable Definition Cohort Definition - XML Representation

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<Group xmlns="http://hl7.org/fhir">
  <id value="282882"/>
  <meta>
    <versionId value="6"/>
    <lastUpdated value="2025-05-10T12:16:25.178Z"/>
  </meta>
  <text>
    <status value="empty"/>
    <div xmlns="http://www.w3.org/1999/xhtml"><p>[No data.]</p></div>
  </text>
  <extension url="http://hl7.org/fhir/StructureDefinition/artifact-author">
    <valueContactDetail>
      <name value="Brian S. Alper"/>
    </valueContactDetail>
  </extension>
  <extension url="http://hl7.org/fhir/uv/ebm/StructureDefinition/cite-as">
    <valueMarkdown
                   value="NHANES LBXGLU Variable Definition Cohort Definition [Database Entry: FHIR Group Resource]. Contributors: Brian S. Alper [Authors/Creators]. In: Fast Evidence Interoperability Resources (FEvIR) Platform, FOI 282882. Revised 2025-05-10. Available at: https://fevir.net/resources/Group/282882. Computable resource at: https://fevir.net/resources/Group/282882#json."/>
  </extension>
  <extension
             url="http://hl7.org/fhir/uv/ebm/StructureDefinition/artifact-publication-status">
    <valueCodeableConcept>
      <coding>
        <system
                value="http://terminology.hl7.org/CodeSystem/cited-artifact-status-type"/>
        <code value="active"/>
        <display value="Active"/>
      </coding>
    </valueCodeableConcept>
  </extension>
  <url value="https://fevir.net/resources/Group/282882"/>
  <identifier>
    <type>
      <coding>
        <system value="http://terminology.hl7.org/CodeSystem/v2-0203"/>
        <code value="ACSN"/>
        <display value="Accession ID"/>
      </coding>
      <text value="FEvIR Object Identifier"/>
    </type>
    <system value="https://fevir.net/FOI"/>
    <value value="282882"/>
    <assigner>
      <display value="Computable Publishing LLC"/>
    </assigner>
  </identifier>
  <title value="NHANES LBXGLU Variable Definition Cohort Definition"/>
  <status value="active"/>
  <publisher value="Computable Publishing LLC"/>
  <contact>
    <telecom>
      <system value="email"/>
      <value value="support@computablepublishing.com"/>
    </telecom>
  </contact>
  <description
               value="This Group Resource is referenced in an example for the EBMonFHIR Implementation Guide."/>
  <copyright value="https://creativecommons.org/licenses/by-nc-sa/4.0/"/>
  <membership value="conceptual"/>
  <combinationMethod value="all-of"/>
  <characteristic>
    <code>
      <text value="Laboratory test"/>
    </code>
    <valueCodeableConcept>
      <coding>
        <system value="http://loinc.org"/>
        <code value="1558-6"/>
        <display value="Fasting glucose [Mass/volume] in Serum or Plasma"/>
      </coding>
      <text value="Fasting plasma glucose"/>
    </valueCodeableConcept>
    <exclude value="false"/>
  </characteristic>
  <characteristic>
    <code>
      <text value="Unit of measure"/>
    </code>
    <valueCodeableConcept>
      <text value="mg/dL"/>
    </valueCodeableConcept>
    <exclude value="false"/>
  </characteristic>
  <characteristic>
    <code>
      <text value="Method"/>
    </code>
    <valueCodeableConcept>
      <text
            value="Description of Laboratory Methodology - Glucose - In this enzymatic method glucose is converted to glucose-6-phosphate (G-6-P) by hexokinase in the presence of ATP, a phosphate donor. Glucose-6-phosphate dehydrogenase then converts the G-6-P to gluconate-6-P in the presence of NADP+. As the NADP+ is reduced to NADPH during this reaction, the resulting increase in absorbance at 340 nm (secondary wavelength = 700 nm) is measured. This is an endpoint reaction that is specific for glucose. Refer to the Laboratory Method Files section for a detailed description of the laboratory methods used. There were no changes to the lab site or lab method for this component in the NHANES 2017-2018 cycle. There were no changes to the lab equipment since 2015-2016. The Cobas C311 analyzer was used in 2017-2018 and 2015-2016. Refer to analytic note for changes to equipment in earlier survey cycles, which may impact analysis.   Plasma Fasting Glucose Laboratory Procedure Manual (August 2020)   https://wwwn.cdc.gov/nchs/data/nhanes/2017-2018/labmethods/GLU-J-MET-508.pdf"/>
    </valueCodeableConcept>
    <exclude value="false"/>
  </characteristic>
</Group>