An example of a LDL measurement.

{
  "resourceType" : "Observation",
  "id" : "ldl",
  "text" : {
    "status" : "generated",
    "div" : "<div xmlns=\"http://www.w3.org/1999/xhtml\"><p class=\"res-header-id\"><b>Generated Narrative: Observation ldl</b></p><a name=\"ldl\"> </a><a name=\"hcldl\"> </a><a name=\"ldl-en-US\"> </a><p><b>status</b>: Final</p><p><b>category</b>: <span title=\"Codes:{http://terminology.hl7.org/CodeSystem/observation-category laboratory}\">Laboratory</span>, <span title=\"Codes:{urn:oid:1.2.840.114350.1.13.177.2.7.10.798268.30 Lab}\">Lab</span></p><p><b>code</b>: <span title=\"Codes:{http://loinc.org 2089-1}\">LDL</span></p><p><b>subject</b>: <a href=\"Patient/pat2\">Donald, Duck</a></p><p><b>effective</b>: 2015-08-16T06:40:17Z</p><p><b>issued</b>: 2015-08-16T08:40:17Z</p><p><b>value</b>: 161 mg/dL<span style=\"background: LightGoldenRodYellow\"> (Details: UCUM  code = 'mg/dL')</span></p><p><b>interpretation</b>: <span title=\"Codes:{http://terminology.hl7.org/CodeSystem/v3-ObservationInterpretation H}\">High</span></p><p><b>specimen</b>: <a href=\"Specimen/sst\">Serum sample</a></p><h3>ReferenceRanges</h3><table class=\"grid\"><tr><td style=\"display: none\">-</td><td><b>Text</b></td></tr><tr><td style=\"display: none\">*</td><td>&lt;100</td></tr></table></div>"
  },
  "status" : "final",
  "category" : [{
    "coding" : [{
      "system" : "http://terminology.hl7.org/CodeSystem/observation-category",
      "code" : "laboratory",
      "display" : "Laboratory"
    }],
    "text" : "Laboratory"
  },
  {
    "coding" : [{
      "system" : "urn:oid:1.2.840.114350.1.13.177.2.7.10.798268.30",
      "code" : "Lab",
      "display" : "Lab"
    }],
    "text" : "Lab"
  }],
  "code" : {
    "coding" : [{
      "system" : "http://loinc.org",
      "code" : "2089-1",
      "display" : "Cholesterol in LDL [Mass/volume] in Serum or Plasma"
    }],
    "text" : "LDL"
  },
  "subject" : {
    "reference" : "Patient/pat2"
  },
  "effectiveDateTime" : "2015-08-16T06:40:17Z",
  "issued" : "2015-08-16T08:40:17Z",
  "valueQuantity" : {
    "value" : 161,
    "unit" : "mg/dL",
    "system" : "http://unitsofmeasure.org",
    "code" : "mg/dL"
  },
  "interpretation" : [{
    "coding" : [{
      "system" : "http://terminology.hl7.org/CodeSystem/v3-ObservationInterpretation",
      "code" : "H",
      "display" : "High"
    }],
    "text" : "High"
  }],
  "specimen" : {
    "reference" : "Specimen/sst",
    "display" : "Serum sample"
  },
  "referenceRange" : [{
    "text" : "<100"
  }]
}