{
  "status" : "final",
  "category" : {
    "text" : "Laboratory",
    "coding" : [
      {
        "system" : "http://hl7.org/fhir/observation-category",
        "display" : "Laboratory",
        "code" : "laboratory"
      }
    ]
  },
  "issued" : "2023-01-10T13:44:15Z",
  "id" : "TkD52v9AKE4iBFXq5Iw-MdmxFHxb6GkomVoDDMIQvU0wHOqw8pgFWXx1QLtng0AVxB",
  "code" : {
    "text" : "AH MAGNESIUM",
    "coding" : [
      {
        "system" : "http://loinc.org",
        "display" : "Magnesium [Mass/volume] in Serum or Plasma",
        "code" : "19123-9"
      }
    ]
  },
  "valueQuantity" : {
    "code" : "mg/dL",
    "value" : 2.0,
    "system" : "http://unitsofmeasure.org",
    "unit" : "mg/dL"
  },
  "subject" : {
    "display" : "Lopez, James Joel",
    "reference" : "https://epicproxy.et0905.epichosted.com/FHIRProxy/api/FHIR/DSTU2/Patient/TrS7pTeyWII9cw-xxl5jDrPczC4c5dkg8XOYg4BocZ84B"
  },
  "referenceRange" : [
    {
      "low" : {
        "code" : "mg/dL",
        "value" : 1.6,
        "system" : "http://unitsofmeasure.org",
        "unit" : "mg/dL"
      },
      "high" : {
        "code" : "mg/dL",
        "value" : 2.5,
        "system" : "http://unitsofmeasure.org",
        "unit" : "mg/dL"
      },
      "text" : "1.6 - 2.5 mg/dL"
    }
  ],
  "effectiveDateTime" : "2023-01-10T13:44:00Z",
  "resourceType" : "Observation"
}