<Observation xmlns="http://hl7.org/fhir">
    <id value="Pathology-Observation-Rubella-Example" />
    <meta>
        <profile value="https://fhir.hl7.org.uk/StructureDefinition/UKCore-Observation-Lab" />
    </meta>
    <identifier>
        <system value="https://tools.ietf.org/html/rfc4122" />
        <value value="f0abb40c-fd22-4483-bc35-ab74531860ad" />
    </identifier>
    <status value="final" />
    <category>
        <coding>
            <system value="http://terminology.hl7.org/CodeSystem/observation-category" />
            <code value="laboratory" />
            <display value="Laboratory" />
        </coding>
    </category>
    <code>
        <!--  Equivalent codes from the PBCL and PaLM SNOMED CT reference sets are used in this example.  -->
        <!--  In practice, it is likely that only a code from one reference set will be carried.  -->
        <coding>
            <!--  From PBCL observable entity reference set  -->
            <system value="http://snomed.info/sct" />
            <code value="1012301000000103" />
            <display value="Rubella IgG level" />
        </coding>
        <coding>
            <!--  From PaLM observable entity reference set  -->
            <system value="http://snomed.info/sct" />
            <code value="21091000237108" />
            <display value="Rubella IgG antibody arbitrary concentration in serum" />
        </coding>
    </code>
    <subject>
        <reference value="urn:uuid:ab87a3f8-1d37-44a9-804e-5e962598a6e4" />
        <display value="MOXEY, Judy" />
    </subject>
    <issued value="2022-06-16T11:21:00+00:00" />
    <performer>
        <reference value="urn:uuid:8a6d85b8-9837-4fed-a257-4cf207988338" />
        <display value="TD008362 PATH LAB 001" />
    </performer>
    <valueQuantity>
        <value value="10" />
        <comparator value="&gt;" />
        <unit value="IU/mL" />
        <system value="http://unitsofmeasure.org" />
        <code value="[IU]/mL" />
    </valueQuantity>
    <interpretation>
        <coding>
            <system value="http://terminology.hl7.org/CodeSystem/v3-ObservationInterpretation" />
            <code value="DET" />
            <display value="Detected" />
        </coding>
    </interpretation>
    <specimen>
        <reference value="urn:uuid:bab0eaec-1ec5-4598-b660-90bb38a1030d" />
    </specimen>
</Observation>

{
    "resourceType": "Observation",
    "id": "Pathology-Observation-Rubella-Example",
    "meta": {
        "profile":  [
            "https://fhir.hl7.org.uk/StructureDefinition/UKCore-Observation-Lab"
        ]
    },
    "identifier":  [
        {
            "system": "https://tools.ietf.org/html/rfc4122",
            "value": "f0abb40c-fd22-4483-bc35-ab74531860ad"
        }
    ],
    "status": "final",
    "category":  [
        {
            "coding":  [
                {
                    "system": "http://terminology.hl7.org/CodeSystem/observation-category",
                    "code": "laboratory",
                    "display": "Laboratory"
                }
            ]
        }
    ],
    "code": {
        "coding":  [
            {
                "system": "http://snomed.info/sct",
                "code": "1012301000000103",
                "display": "Rubella IgG level"
            },
            {
                "system": "http://snomed.info/sct",
                "code": "21091000237108",
                "display": "Rubella IgG antibody arbitrary concentration in serum"
            }
        ]
    },
    "subject": {
        "reference": "urn:uuid:ab87a3f8-1d37-44a9-804e-5e962598a6e4",
        "display": "MOXEY, Judy"
    },
    "issued": "2022-06-16T11:21:00+00:00",
    "performer":  [
        {
            "reference": "urn:uuid:8a6d85b8-9837-4fed-a257-4cf207988338",
            "display": "TD008362 PATH LAB 001"
        }
    ],
    "valueQuantity": {
        "value": 10,
        "comparator": ">",
        "unit": "IU/mL",
        "system": "http://unitsofmeasure.org",
        "code": "[IU]/mL"
    },
    "interpretation":  [
        {
            "coding":  [
                {
                    "system": "http://terminology.hl7.org/CodeSystem/v3-ObservationInterpretation",
                    "code": "DET",
                    "display": "Detected"
                }
            ]
        }
    ],
    "specimen": {
        "reference": "urn:uuid:bab0eaec-1ec5-4598-b660-90bb38a1030d"
    }
}