{

"resourceType": "Observation",
"id": "herd1",
"status": "final",
"category": [
  {
    "coding": [
      {
        "system": "http://terminology.hl7.org/CodeSystem/observation-category",
        "code": "laboratory",
        "display": "Laboratory"
      }
    ],
    "text": "Laboratory"
  }
],
"code": {
  "coding": [
    {
      "system": "http://loinc.org",
      "code": "80219-9",
      "display": "Mycoplasma hyopneumoniae Ab sample/Positive control in Serum by Immunoassay"
    },
    {
      "system": "http://acme.org/devices/clinical-codes",
      "code": "Mycoplasma",
      "display": "Mycoplasma"
    }
  ],
  "text": "Mycoplasma hyopneumoniae - MHP"
},
"subject": {
  "reference": "Group/herd1"
},
"encounter": {
  "display": "part of a health assurance program"
},
"effectiveDateTime": "2017-11-20",
"valueQuantity": {
  "value": 0.2,
  "unit": "% (sample/positive control)",
  "system": "http://unitsofmeasure.org",
  "code": "%"
},
"interpretation": [
  {
    "coding": [
      {
        "system": "http://terminology.hl7.org/CodeSystem/v3-ObservationInterpretation",
        "code": "NEG",
        "display": "Negative"
      }
    ],
    "text": "Negative"
  }
],
"specimen": {
  "reference": "Specimen/pooled-serum",
  "display": "30 serum"
},
"referenceRange": [
  {
    "text": ">0.4 Positive; 0.3 to 0.4 Suspect < 0.3 Negative"
  }
],
"meta": {
  "tag": [
    {
      "system": "http://terminology.hl7.org/CodeSystem/v3-ActReason",
      "code": "HTEST",
      "display": "test health data"
    }
  ]
}

}