Real-world patient - creatinine

{
  "resourceType" : "Observation",
  "id" : "f204",
  "identifier" : [{
    "system" : "https://intranet.aumc.nl/labvalues",
    "value" : "1304-03720-Creatinine"
  }],
  "status" : "final",
  "code" : {
    "coding" : [{
      "system" : "https://intranet.aumc.nl/labtestcodes",
      "code" : "20005",
      "display" : "Creatinine(Serum)"
    }]
  },
  "subject" : {
    "reference" : "Patient/f201",
    "display" : "Roel"
  },
  "issued" : "2013-04-04T14:34:00+01:00",
  "performer" : [{
    "reference" : "Practitioner/f202",
    "display" : "Luigi Maas"
  }],
  "valueQuantity" : {
    "value" : 122,
    "unit" : "umol/L",
    "system" : "http://snomed.info/sct",
    "code" : "258814008"
  },
  "interpretation" : [{
    "coding" : [{
      "system" : "http://snomed.info/sct",
      "code" : "166717003",
      "display" : "Serum creatinine raised"
    },
    {
      "system" : "http://terminology.hl7.org/CodeSystem/v3-ObservationInterpretation",
      "code" : "H"
    }]
  }],
  "referenceRange" : [{
    "low" : {
      "value" : 64
    },
    "high" : {
      "value" : 104
    },
    "type" : {
      "coding" : [{
        "system" : "http://terminology.hl7.org/CodeSystem/referencerange-meaning",
        "code" : "normal",
        "display" : "Normal Range"
      }]
    }
  }]
}