<Observation xmlns="http://hl7.org/fhir">
  <id value="37a7392d-25ce-4603-9898-7d855a133ead" />
  <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="85337-4" />
      <display value="Estrogen receptor Ag [Presence] in Breast cancer specimen by Immune stain" />
    </coding>
    <text value="Estrogen receptor Ag [Presence] in Breast cancer specimen by Immune stain" />
  </code>
  <subject>
    <reference value="Patient/b4c4db46-a7ac-4e55-adcc-578ba31d9ad2" />
  </subject>
  <encounter>
    <reference value="Encounter/565c930f-f017-428c-80ea-c7f739f210e2" />
  </encounter>
  <effectiveDateTime value="1944-10-25T17:16:30-04:00" />
  <issued value="1944-10-25T17:16:30.361-04:00" />
  <valueCodeableConcept>
    <coding>
      <system value="http://snomed.info/sct" />
      <code value="10828004" />
      <display value="Positive (qualifier value)" />
    </coding>
    <text value="Positive (qualifier value)" />
  </valueCodeableConcept>
</Observation>