This profile defines the expected capabilities of the USLabOrder Orderer actor when conforming to the [[uslaborder.html|The US Laboratory Order Implementation (USLabOrder)]]. This actor is the originator of a laboratory test order request to the laboratory (order filler) and declares conformance to RESTful FHIR and FHIR profiles defined in this guide. The order reference one or more FHIR resources conforming to profiles outlined in the USLabOrder guide.