An example of a simple blood typing panel.

{
  "resourceType" : "Observation",
  "id" : "bgpanel",
  "text" : {
    "status" : "generated",
    "div" : "<div xmlns=\"http://www.w3.org/1999/xhtml\"><p><b>Generated Narrative: Observation</b><a name=\"bgpanel\"> </a></p><div style=\"display: inline-block; background-color: #d9e0e7; padding: 6px; margin: 4px; border: 1px solid #8da1b4; border-radius: 5px; line-height: 60%\"><p style=\"margin-bottom: 0px\">Resource Observation &quot;bgpanel&quot; </p></div><p><b>status</b>: final</p><p><b>category</b>: Laboratory <span style=\"background: LightGoldenRodYellow; margin: 4px; border: 1px solid khaki\"> (<a href=\"http://terminology.hl7.org/4.0.0/CodeSystem-observation-category.html\">Observation Category Codes</a>#laboratory)</span></p><p><b>code</b>: Blood Group Panel <span style=\"background: LightGoldenRodYellow; margin: 4px; border: 1px solid khaki\"> (<a href=\"https://loinc.org/\">LOINC</a>#34532-2 &quot; Blood type and Indirect antibody screen panel - Blood&quot;)</span></p><p><b>subject</b>: <a href=\"broken-link.html\">Patient/infant</a></p><p><b>effective</b>: 2018-03-11T16:07:54Z</p><p><b>hasMember</b>: </p><ul><li><a href=\"observation-example-bloodgroup.html\">Observation/bloodgroup</a></li><li><a href=\"observation-example-rhstatus.html\">Observation/rhstatus</a></li></ul></div>"
  },
  "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" : "34532-2",
      "display" : " Blood type and Indirect antibody screen panel - Blood"
    }],
    "text" : "Blood Group Panel"
  },
  "subject" : {
    "reference" : "Patient/infant"
  },
  "effectiveDateTime" : "2018-03-11T16:07:54+00:00",
  "hasMember" : [{
    "reference" : "Observation/bloodgroup"
  },
  {
    "reference" : "Observation/rhstatus"
  }]
}