<status value="active"/> <experimental value="false"/> <date value="2014-03-26"/> <description value="A specimen specifically used to verify the sensitivity, specificity, accuracy or other perfomance parameter of a diagnostic test."/> <compose> <include> <system value="http://terminology.hl7.org/CodeSystem/v3-RoleCode"/> <filter> <property value="concept"/> <op value="is-a"/> <value value="Q"/> </filter> </include> </compose> </ValueSet>