<?xml version=“1.0” encoding=“UTF-8”?> <ServiceRequest xmlns=“hl7.org/fhir”>

      <id value="ft4"/>
      <meta>
  <security>
    <system value="http://terminology.hl7.org/CodeSystem/v3-ActReason"/>
    <code value="HTEST"/>
    <display value="test health data"/>
  </security>
</meta>
<status value="active"/>
      <intent value="reflex-order"/>
      <code>
              <coding>
                      <system value="http://loinc.org"/>
                      <code value="3024-7"/>
                      <display value="Thyroxine (T4) free [Mass/​volume] in Serum or Plasma"/>
              </coding>
              <text value="Free T4"/>
      </code>
      <subject>
              <reference value="Patient/pat2"/>
      </subject>
      <occurrenceDateTime value="2015-08-27T09:33:27+07:00"/>
      <requester>
                      <reference value="Practitioner/example"/>
      </requester>

</ServiceRequest>