<Substance xmlns="http://hl7.org/fhir">
  <id value="Heparin" />
  <meta>
    <profile value="https://www.medizininformatik-initiative.de/fhir/ext/modul-biobank/StructureDefinition/Substance" />
  </meta>
  <code>
    <coding>
      <system value="http://snomed.info/sct" />
      <code value="372877000" />
      <display value="Heparin (substance)" />
    </coding>
  </code>
</Substance>