<Observation xmlns="http://hl7.org/fhir">
  <id value="9d101056-7ec6-48bc-97ca-a0488deaffbd" />
  <meta>
    <versionId value="1" />
    <lastUpdated value="2021-03-12T10:55:53.53-05:00" />
    <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>