{
  "resourceType" : "ObservationDefinition",
  "id" : "example-observation-serum-potassium",
  "meta" : {
    "profile" : ["http://hl7.org/fhir/uv/order-catalog/StructureDefinition/LabObservationDefinition"]
  },
  "language" : "en-US",
  "text" : {
    "status" : "generated",
    "div" : "<div xmlns=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en-US\" lang=\"en-US\"><p class=\"res-header-id\"><b>Generated Narrative: ObservationDefinition example-observation-serum-potassium</b></p><a name=\"example-observation-serum-potassium\"> </a><a name=\"hcexample-observation-serum-potassium\"> </a><div style=\"display: inline-block; background-color: #d9e0e7; padding: 6px; margin: 4px; border: 1px solid #8da1b4; border-radius: 5px; line-height: 60%\"><p style=\"margin-bottom: 0px\">Language: en-US</p><p style=\"margin-bottom: 0px\">Profile: <a href=\"StructureDefinition-LabObservationDefinition.html\">Laboratory Observation Definition</a></p></div><p><b>status</b>: Active</p><p><b>category</b>: <span title=\"Codes:{http://terminology.hl7.org/CodeSystem/observation-category laboratory}\">Laboratory</span></p><p><b>code</b>: <span title=\"Codes:{http://loinc.org 2823-3}\">Potassium [Moles/volume] in Serum or Plasma</span></p><p><b>permittedDataType</b>: Quantity, string</p><p><b>multipleResultsAllowed</b>: false</p><p><b>method</b>: <span title=\"Codes:\">Ion Selective Electrode (ISE)</span></p><p><b>preferredReportName</b>: Potassium</p><p><b>permittedUnit</b>: <a href=\"http://tx.fhir.org/r5/ValueSet/x-ucum#x-ucum-mmol.47L\">UCUM: mmol/L</a> (mmol/L), <a href=\"http://tx.fhir.org/r5/ValueSet/x-ucum#x-ucum-g.47L\">UCUM: g/L</a> (g/L)</p><blockquote><p><b>qualifiedValue</b></p><p><b>context</b>: <span title=\"Codes:{http://terminology.hl7.org/CodeSystem/referencerange-meaning normal}\">Normal Range</span></p><p><b>age</b>: 2-19</p><p><b>rangeCategory</b>: reference range</p><p><b>range</b>: 3.8-5.1</p></blockquote><blockquote><p><b>qualifiedValue</b></p><p><b>context</b>: <span title=\"Codes:{http://terminology.hl7.org/CodeSystem/referencerange-meaning normal}\">Normal Range</span></p><p><b>age</b>: 20-?</p><p><b>rangeCategory</b>: reference range</p><p><b>range</b>: 3.5-5.3</p></blockquote></div>"
  },
  "status" : "active",
  "category" : [{
    "coding" : [{
      "system" : "http://terminology.hl7.org/CodeSystem/observation-category",
      "code" : "laboratory",
      "display" : "Laboratory"
    }]
  }],
  "code" : {
    "coding" : [{
      "system" : "http://loinc.org",
      "code" : "2823-3",
      "display" : "Potassium [Moles/volume] in Serum or Plasma"
    }]
  },
  "permittedDataType" : ["Quantity",
  "string"],
  "multipleResultsAllowed" : false,
  "method" : {
    "text" : "Ion Selective Electrode (ISE)"
  },
  "preferredReportName" : "Potassium",
  "permittedUnit" : [{
    "system" : "http://unitsofmeasure.org",
    "code" : "mmol/L"
  },
  {
    "system" : "http://unitsofmeasure.org",
    "code" : "g/L"
  }],
  "qualifiedValue" : [{
    "context" : {
      "coding" : [{
        "system" : "http://terminology.hl7.org/CodeSystem/referencerange-meaning",
        "code" : "normal",
        "display" : "Normal Range"
      }]
    },
    "age" : {
      "low" : {
        "value" : 2,
        "system" : "http://unitsofmeasure.org",
        "code" : "a"
      },
      "high" : {
        "value" : 19,
        "system" : "http://unitsofmeasure.org",
        "code" : "a"
      }
    },
    "rangeCategory" : "reference",
    "range" : {
      "low" : {
        "value" : 3.8,
        "system" : "http://unitsofmeasure.org",
        "code" : "mmol/L"
      },
      "high" : {
        "value" : 5.1,
        "system" : "http://unitsofmeasure.org",
        "code" : "mmol/L"
      }
    }
  },
  {
    "context" : {
      "coding" : [{
        "system" : "http://terminology.hl7.org/CodeSystem/referencerange-meaning",
        "code" : "normal",
        "display" : "Normal Range"
      }]
    },
    "age" : {
      "low" : {
        "value" : 20,
        "system" : "http://unitsofmeasure.org",
        "code" : "a"
      }
    },
    "rangeCategory" : "reference",
    "range" : {
      "low" : {
        "value" : 3.5,
        "system" : "http://unitsofmeasure.org",
        "code" : "mmol/L"
      },
      "high" : {
        "value" : 5.3,
        "system" : "http://unitsofmeasure.org",
        "code" : "mmol/L"
      }
    }
  }]
}