<Observation xmlns="http://hl7.org/fhir">
  <status value="final" />
  <category>
    <coding>
      <system value="http://terminology.hl7.org/CodeSystem/observation-category" />
      <code value="vital-signs" />
    </coding>
  </category>
  <code>
    <coding>
      <system value="http://loinc.org" />
      <code value="29463-7" />
      <display value="Body weight with reference range and interpretation" />
    </coding>
    <coding>
      <system value="http://snomed.info/sct" />
      <code value="27113001" />
      <display value="Body weight (observable entity)" />
    </coding>
  </code>
  <subject>
    <identifier>
      <system value="urn:oid:1.2.246.21" />
      <value value="010101-123N" />
    </identifier>
  </subject>
  <effectiveDateTime value="2022-05-17T11:46:00+02:00" />
  <valueQuantity>
    <value value="95" />
    <unit value="kg" />
    <system value="http://unitsofmeasure.org" />
    <code value="kg" />
  </valueQuantity>
  <interpretation>
    <coding>
      <system value="http://terminology.hl7.org/CodeSystem/v3-ObservationInterpretation" />
      <code value="N" />
      <display value="Normal" />
    </coding>
  </interpretation>
  <device>
    <extension url="DeviceVersion">
      <valueString value="Withings" />
    </extension>
    <extension url="lastSyncTime">
      <valueDateTime value="2022-04-01" />
    </extension>
  </device>
  <referenceRange>
    <low>
      <value value="55" />
      <unit value="kg" />
      <system value="http://unitsofmeasure.org" />
      <code value="kg" />
    </low>
    <high>
      <value value="150" />
      <unit value="kg" />
      <system value="http://unitsofmeasure.org" />
      <code value="kg" />
    </high>
    <appliesTo>
      <coding>
        <system value="http://snomed.info/sct" />
        <code value="248153007" />
        <display value="Male" />
      </coding>
      <text value="Normal range" />
    </appliesTo>
    <age>
      <low>
        <value value="15" />
        <unit value="years" />
        <system value="http://unitsofmeasure.org" />
        <code value="a" />
      </low>
      <high>
        <value value="100" />
        <unit value="years" />
        <system value="http://unitsofmeasure.org" />
        <code value="a" />
      </high>
    </age>
    <text value="Age" />
  </referenceRange>
</Observation>