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

<id value="f201"/>
 <meta>
   <security>
     <system value="http://terminology.hl7.org/CodeSystem/v3-ActReason"/>
     <code value="HTEST"/>
     <display value="test health data"/>
   </security>
 </meta>
 <code>     
   <coding>
     <system value="http://snomed.info/sct"/>
     <code value="406466009"/>
     <display value="House dust allergen"/>
   </coding>
 </code>

</Substance>