{
  "status" : "final",
  "category" : {
    "text" : "Laboratory",
    "coding" : [
      {
        "system" : "http://hl7.org/fhir/observation-category",
        "display" : "Laboratory",
        "code" : "laboratory"
      }
    ]
  },
  "issued" : "2015-10-19T17:34:00Z",
  "id" : "ThwyC6o69beD0TPHL3W-hxA64C2u.T8dl3V1ok3F.xV8B",
  "code" : {
    "text" : "VZV IGG",
    "coding" : [
      {
        "system" : "http://loinc.org",
        "display" : "Varicella zoster virus IgG Ab [Units/volume] in Serum",
        "code" : "8047-3"
      }
    ]
  },
  "valueQuantity" : {
    "value" : 1.51,
    "unit" : "OD Ratio"
  },
  "subject" : {
    "display" : "Lopez, James",
    "reference" : "https://apiservices.sutterhealth.org/ifs/api/FHIR/DSTU2/Patient/Tbjbfj8w94HFwJ-ekeTNN.e1WrM6guoKJdhNrHG7dSfUB"
  },
  "comments" : "Immune \r\n                                 \r\nNon-Immune  < or = 0.90\r\nEquivocal   0.91 - 1.09\r\nImmune      > or = 1.10\r\n                                 \r\nA positive result (OD ratio greater than or equal to 1.10) indicates that the \r\npatient has antibody to VZV (Varicella zoster virus) and implies immunity. It \r\ndoes not differentiate between an active or past infection or vaccination.\r\nThe clinical significance of this result must be determined in conjunction \r\nwith the clinical signs and symptoms of the patient.\r\n",
  "effectiveDateTime" : "2015-10-19T17:34:00Z",
  "referenceRange" : [
    {
      "text" : ">1.09"
    }
  ],
  "resourceType" : "Observation"
}