{
  "resourceType" : "ObservationDefinition",
  "id" : "example-observation-vitamin-d",
  "meta" : {
    "profile" : ["http://hl7.org/fhir/uv/order-catalog/StructureDefinition/LabObservationDefinition"]
  },
  "language" : "en",
  "text" : {
    "status" : "additional",
    "div" : "<div xmlns=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\" lang=\"en\">\n            <p><b>Observation Definition - Vitamin D serum test:</b></p>\n            <p>Medical biology test: Vitamin D assay in blood serum</p>\n            <p>Category: laboratory</p>\n            <p>Identification: 14635-7 |25-hydroxyvitamin D3 [Moles/volume] in Serum or Plasma| (http://loinc.org)</p>\n            <p>Permitted result types: quantitative, textual</p>\n            <p>Multiple results: no</p>\n            <p>Preferred report name: Vitamin D</p>\n            <p>Unit of measure: pmol/L (http://unitsofmeasure.org)</p>\n        </div>"
  },
  "status" : "active",
  "category" : [{
    "coding" : [{
      "system" : "http://terminology.hl7.org/CodeSystem/observation-category",
      "code" : "laboratory",
      "display" : "Laboratory"
    }]
  }],
  "code" : {
    "coding" : [{
      "system" : "http://loinc.org",
      "code" : "14635-7",
      "display" : "25-hydroxyvitamin D3 [Moles/volume] in Serum or Plasma"
    }]
  },
  "permittedDataType" : ["Quantity",
  "string"],
  "multipleResultsAllowed" : false,
  "preferredReportName" : "Vitamin D",
  "permittedUnit" : [{
    "system" : "http://unitsofmeasure.org",
    "code" : "pmol/L"
  }]
}