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Narrative

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Source1

{
  "resourceType": "Group",
  "id": "282882",
  "meta": {
    "versionId": "6",
    "lastUpdated": "2025-05-10T12:16:25.178Z"
  },
  "language": "en",
  "text": {
    "status": "empty",
    "div": "<!-- snip (see above) -->"
  },
  "extension": [
    {
      "url": "http://hl7.org/fhir/StructureDefinition/artifact-author",
      "valueContactDetail": {
        "name": "Brian S. Alper"
      }
    },
    {
      "url": "http://hl7.org/fhir/uv/ebm/StructureDefinition/cite-as",
      "valueMarkdown": "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."
    },
    {
      "url": "http://hl7.org/fhir/uv/ebm/StructureDefinition/artifact-publication-status",
      "valueCodeableConcept": {
        "coding": [
          {
            "system": "http://terminology.hl7.org/CodeSystem/cited-artifact-status-type",
            "code": "active",
            "display": "Active"
          }
        ]
      }
    }
  ],
  "url": "https://fevir.net/resources/Group/282882",
  "identifier": [
    {
      "type": {
        "coding": [
          {
            "system": "http://terminology.hl7.org/CodeSystem/v2-0203",
            "code": "ACSN",
            "display": "Accession ID"
          }
        ],
        "text": "FEvIR Object Identifier"
      },
      "system": "https://fevir.net/FOI",
      "value": "282882",
      "assigner": {
        "display": "Computable Publishing LLC"
      }
    }
  ],
  "title": "NHANES LBXGLU Variable Definition Cohort Definition",
  "status": "active",
  "publisher": "Computable Publishing LLC",
  "contact": [
    {
      "telecom": [
        {
          "system": "email",
          "value": "support@computablepublishing.com"
        }
      ]
    }
  ],
  "description": "This Group Resource is referenced in an example for the EBMonFHIR Implementation Guide.",
  "copyright": "https://creativecommons.org/licenses/by-nc-sa/4.0/",
  "membership": "conceptual",
  "combinationMethod": "all-of",
  "characteristic": [
    {
      "code": {
        "text": "Laboratory test"
      },
      "valueCodeableConcept": {
        "coding": [
          {
            "system": "http://loinc.org",
            "code": "1558-6",
            "display": "Fasting glucose [Mass/volume] in Serum or Plasma"
          }
        ],
        "text": "Fasting plasma glucose"
      },
      "exclude": false
    },
    {
      "code": {
        "text": "Unit of measure"
      },
      "valueCodeableConcept": {
        "text": "mg/dL"
      },
      "exclude": false
    },
    {
      "code": {
        "text": "Method"
      },
      "valueCodeableConcept": {
        "text": "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"
      },
      "exclude": false
    }
  ]
}