{
  "resourceType": "Observation",
  "id": "c37408e8-f6f8-4398-8af7-b89356e1d06d",
  "meta": {
    "versionId": "1",
    "lastUpdated": "2021-03-12T11:50:05.269+00:00",
    "source": "#8VEGmpEIGaRPRFEr"
  },
  "status": "final",
  "category": [
    {
      "coding": [
        {
          "system": "http://terminology.hl7.org/CodeSystem/observation-category",
          "code": "laboratory",
          "display": "laboratory"
        }
      ]
    }
  ],
  "code": {
    "coding": [
      {
        "system": "http://loinc.org",
        "code": "17842-6",
        "display": "Cancer Ag 27-29 [Units/volume] in Serum or Plasma"
      }
    ],
    "text": "Cancer Ag 27-29 [Units/volume] in Serum or Plasma"
  },
  "subject": {
    "reference": "Patient/b4c4db46-a7ac-4e55-adcc-578ba31d9ad2"
  },
  "encounter": {
    "reference": "Encounter/128cf086-587a-406f-a375-dae6f298e832"
  },
  "effectiveDateTime": "1945-06-26T15:39:30+00:00",
  "issued": "1945-06-26T15:39:30.361+00:00",
  "valueQuantity": {
    "value": 11.825,
    "unit": "[arb'U]/mL",
    "system": "http://unitsofmeasure.org",
    "code": "[arb'U]/mL"
  }
}