<Observation xmlns="http://hl7.org/fhir">
  <id value="99b79eef-c71e-4ab7-956d-cbd3ef6fe006" />
  <meta>
    <versionId value="1" />
    <lastUpdated value="2021-03-12T06:49:26.584-05:00" />
    <source value="#8uq0hCqfmfUT0K6w" />
  </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="6875-9" />
      <display value="Cancer Ag 15-3 [Units/volume] in Serum or Plasma" />
    </coding>
    <text value="Cancer Ag 15-3 [Units/volume] in Serum or Plasma" />
  </code>
  <subject>
    <reference value="Patient/09a6b259-d141-4f93-82e7-5e076fb0fbf8" />
  </subject>
  <encounter>
    <reference value="Encounter/5617e933-e85f-4c93-9d0b-9f71b371bc49" />
  </encounter>
  <effectiveDateTime value="1965-09-11T09:38:05-04:00" />
  <issued value="1965-09-11T09:38:05.387-04:00" />
  <valueQuantity>
    <value value="0.61902" />
    <unit value="[arb'U]/mL" />
    <system value="http://unitsofmeasure.org" />
    <code value="[arb'U]/mL" />
  </valueQuantity>
</Observation>