<Observation xmlns="http://hl7.org/fhir">
    <id value="9d101056-7ec6-48bc-97ca-a0488deaffbd" />
    <meta>
        <versionId value="1" />
        <lastUpdated value="2021-03-12T10:55:53.530-05:00" />
        <source value="#hmb2CwhwUe7JwMoC" />
    </meta>
    <status value="final" />
    <category>
        <coding>
            <system value="http://terminology.hl7.org/CodeSystem/observation-category" />
            <code value="laboratory" />
            <display value="laboratory" />
        </coding>
    </category>
    <code>
        <coding>
            <system value="http://loinc.org" />
            <code value="24108-3" />
            <display value="Cancer Ag 19-9 [Units/volume] in Serum or Plasma" />
        </coding>
        <text value="Cancer Ag 19-9 [Units/volume] in Serum or Plasma" />
    </code>
    <subject>
        <reference value="Patient/06cd81b5-b901-4e5b-9f64-74a0ef1ea433" />
    </subject>
    <encounter>
        <reference value="Encounter/97b3a7bd-a2c3-4e9d-a169-74ed4c730739" />
    </encounter>
    <effectiveDateTime value="2017-11-11T18:29:17-05:00" />
    <issued value="2017-11-11T18:29:17.065-05:00" />
    <valueQuantity>
        <value value="23" />
        <unit value="U/mL" />
        <system value="http://unitsofmeasure.org" />
        <code value="U/mL" />
    </valueQuantity>
</Observation>