{
  "resourceType": "Observation",
  "id": "656bbbec-28f3-4f8a-bdd1-01dcea656e7a",
  "meta": {
    "versionId": "1",
    "lastUpdated": "2021-03-12T15:54:04.126+00:00",
    "source": "#PYm1s7IOmQcC4MBf"
  },
  "status": "final",
  "category": [
    {
      "coding": [
        {
          "system": "http://terminology.hl7.org/CodeSystem/observation-category",
          "code": "laboratory",
          "display": "laboratory"
        }
      ]
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  ],
  "code": {
    "coding": [
      {
        "system": "http://loinc.org",
        "code": "2857-1",
        "display": "Prostate specific Ag [Mass/volume] in Serum or Plasma"
      }
    ],
    "text": "Prostate specific Ag [Mass/volume] in Serum or Plasma"
  },
  "subject": {
    "reference": "Patient/1d86bcfe-6359-4c82-add8-770fe8b14b50"
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  "encounter": {
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  "effectiveDateTime": "2020-03-17T23:34:17+00:00",
  "issued": "2020-03-17T23:34:17.901+00:00",
  "valueQuantity": {
    "value": 1.5083,
    "unit": "ng/mL",
    "system": "http://unitsofmeasure.org",
    "code": "ng/mL"
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}