An example of a VLDL measurement.

{
  "resourceType" : "Observation",
  "id" : "vldl",
  "text" : {
    "status" : "generated",
    "div" : "<div xmlns=\"http://www.w3.org/1999/xhtml\"><p class=\"res-header-id\"><b>Generated Narrative: Observation vldl</b></p><a name=\"vldl\"> </a><a name=\"hcvldl\"> </a><a name=\"vldl-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 2091-7}\">VLDL</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>: 44 mg/dL<span style=\"background: LightGoldenRodYellow\"> (Details: UCUM  code = 'mg/dL')</span></p><p><b>specimen</b>: <a href=\"Specimen/sst\">Serum sample</a></p></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" : "2091-7",
      "display" : "Cholesterol in VLDL [Mass/volume] in Serum or Plasma"
    }],
    "text" : "VLDL"
  },
  "subject" : {
    "reference" : "Patient/pat2"
  },
  "effectiveDateTime" : "2015-08-16T06:40:17Z",
  "issued" : "2015-08-16T08:40:17Z",
  "valueQuantity" : {
    "value" : 44,
    "unit" : "mg/dL",
    "system" : "http://unitsofmeasure.org",
    "code" : "mg/dL"
  },
  "specimen" : {
    "reference" : "Specimen/sst",
    "display" : "Serum sample"
  }
}