{
  "resourceType": "Observation",
  "id": "observation-1",
  "identifier": [
    {
      "use": "official",
      "system": "http://example.laboratory.com",
      "value": "1001"
    }
  ],
  "basedOn": [
    {
      "reference": "ServiceRequest/servicerequest_unk"
    }
  ],
  "status": "final",
  "category": [
    {
      "coding": [
        {
          "system": "http://terminology.hl7.org/CodeSystem/observation-category",
          "code": "laboratory",
          "display": "Laboratory"
        }
      ],
      "text": "Laboratory"
    },
    {
      "coding": [
        {
          "system": "urn:oid:1.2.345.6789",
          "code": "Lab",
          "display": "Lab"
        }
      ],
      "text": "Laboratory"
    }
  ],
  "code": {
    "coding": [
      {
        "system": "http://loinc.org",
        "code": "4548-4",
        "display": "Hemoglobin A1c/Hemoglobin.total in Blood"
      },
      {
        "system": "urn:oid:1.2.345.6789",
        "code": "10001",
        "display": "Hemoglobin A1c %"
      }
    ],
    "text": "Hemoglobin A1c/Hemoglobin.total in Blood"
  },
  "subject": {
    "reference": "Patient/patient-1",
    "display": "Example, Anne"
  },
  "encounter": {
    "reference": "Encounter/encounter-5",
    "identifier": {
      "use": "usual",
      "system": "urn:oid:1.2.345.6789",
      "value": "10005"
    },
    "display": "Endocrine outpatient appointment"
  },
  "performer": [
    {
      "display": "Outpatient Phlebotomist"
    }
  ],
  "effectiveDateTime": "2022-09-28T09:48:00Z",
  "issued": "2022-09-28T13:22:41Z",
  "valueQuantity": {
    "value": 6.8,
    "unit": "%",
    "system": "http://unitsofmeasure.org",
    "code": "%"
  },
  "referenceRange": [
    {
      "low": {
        "value": 4.0,
        "unit": "%",
        "system": "http://unitsofmeasure.org",
        "code": "%"
      },
      "high": {
        "value": 5.6,
        "unit": "%",
        "system": "http://unitsofmeasure.org",
        "code": "%"
      },
      "type": {
        "coding": [
          {
            "system": "http://terminology.hl7.org/CodeSystem/referencerange-meaning",
            "code": "normal",
            "display": "Normal Range"
          }
        ]
      },
      "appliesTo": [
        {
          "coding": [
            {
              "system": "http://snomed.info/sct",
              "code": "248152002",
              "display": "Female"
            }
          ]
        }
      ],
      "age": {
        "low": {
          "value": 18,
          "unit": "year"
        }
      },
      "text": "Normal range: 4.0-5.6%"
    }
  ],
  "interpretation": [
    {
      "coding": [
        {
          "system": "http://terminology.hl7.org/CodeSystem/v3-ObservationInterpretation",
          "code": "H",
          "display": "High"
        }
      ]
    }
  ],
  "specimen": {
    "reference": "Specimen/specimen_unk",
    "display": "Specimen"
  },
  "note": [
    {
      "text": "No prior history of diabetes mellitus."
    }
  ]
}