<?xml version="1.0" encoding="UTF-8"?><Observation xmlns="http://hl7.org/fhir">
  <id value="f204"/>
  <!-- The observation is complete -->
  <!-- No reliability concerns -->
  <meta>
    <security>
      <system value="http://terminology.hl7.org/CodeSystem/v3-ActReason"/>
      <code value="HTEST"/>
      <display value="test health data"/>
    </security>
  </meta>
  <identifier>
    <system value="https://intranet.aumc.nl/labvalues"/>
    <!-- Does not exist -->
    <value value="1304-03720-Creatinine"/>
  </identifier>
  <!-- Creatinine was measured on April fourth -->
  <status value="final"/>
  <code>
    <!-- Kind of observation = Serum Creatinine, Using only a local code in this example -->
    <coding>
      <system value="https://intranet.aumc.nl/labtestcodes"/>
      <!-- Does not exist -->
      <code value="20005"/>
      <display value="Creatinine(Serum)"/>
    </coding>
  </code>
  <subject>
    <reference value="Patient/f201"/>
    <display value="Roel"/>
  </subject>
  <issued value="2013-04-04T14:34:00+01:00"/>
  <performer>
    <reference value="Practitioner/f202"/>
    <display value="Luigi Maas"/>
  </performer>
  <valueQuantity>
    <!-- Creatinine=122mmol/L -->
    <value value="122"/>
    <unit value="umol/L"/>
    <system value="http://snomed.info/sct"/>
    <code value="258814008"/>
  </valueQuantity>
  <interpretation>
    <coding>
      <system value="http://snomed.info/sct"/>
      <code value="166717003"/>
      <display value="Serum creatinine raised"/>
    </coding>
    <coding>
      <system value="http://terminology.hl7.org/CodeSystem/v3-ObservationInterpretation"/>
      <code value="H"/>
    </coding>
  </interpretation>
  <referenceRange>
    <!-- Healthy creatinine level ranges from 64umol/L to 104umol/L -->
    <low>
      <value value="64"/>
    </low>
    <high>
      <value value="104"/>
    </high>
    <type>
      <coding>
        <system value="http://terminology.hl7.org/CodeSystem/referencerange-meaning"/>
        <code value="normal"/>
        <display value="Normal Range"/>
      </coding>
    </type>
  </referenceRange>
</Observation>