<Observation xmlns="http://hl7.org/fhir">
  <id value="c37408e8-f6f8-4398-8af7-b89356e1d06d" />
  <meta>
    <versionId value="1" />
    <lastUpdated value="2021-03-12T06:50:05.269-05:00" />
    <source value="#8VEGmpEIGaRPRFEr" />
  </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="17842-6" />
      <display value="Cancer Ag 27-29 [Units/volume] in Serum or Plasma" />
    </coding>
    <text value="Cancer Ag 27-29 [Units/volume] in Serum or Plasma" />
  </code>
  <subject>
    <reference value="Patient/b4c4db46-a7ac-4e55-adcc-578ba31d9ad2" />
  </subject>
  <encounter>
    <reference value="Encounter/128cf086-587a-406f-a375-dae6f298e832" />
  </encounter>
  <effectiveDateTime value="1945-06-26T11:39:30-04:00" />
  <issued value="1945-06-26T11:39:30.361-04:00" />
  <valueQuantity>
    <value value="11.825" />
    <unit value="[arb'U]/mL" />
    <system value="http://unitsofmeasure.org" />
    <code value="[arb'U]/mL" />
  </valueQuantity>
</Observation>