<?xml version=“1.0” encoding=“UTF-8”?> <Observation xmlns=“hl7.org/fhir”>
<id value="vp-oyster"/> <meta> <security> <system value="http://terminology.hl7.org/CodeSystem/v3-ActReason"/> <code value="HTEST"/> <display value="test health data"/> </security> </meta> <identifier> <use value="official"/> <system value="http://sonomacounty.ca.gov/Health/Public-Health/Laboratory"/> <value value="20171014-1234"/> </identifier> <status value="preliminary"/> <!-- Observations are often coded in multiple code systems. - LOINC - or SNOMED -and/or the source system may provides its own "local" code, which may be less or more granular than LOINC. In this example there is only local codes --> <code> <!-- Should use a proper LOINC code --> <coding> <system value="http://loinc.org"/> <code value="41857-4"/> <display value="Vibrio parahaemolyticus DNA [Presence] in Unspecified specimen by Probe and target amplification method"/> </coding> <!-- here is the local code --> <coding> <system value="http://sonomacounty.ca.gov/Health/Public-Health/Laboratory/test-codes"/> <code value="VP MULTI PCR"/> <display value="VP MULTI PCR"/> </coding> <text value="OYSTER TESTING"/> </code> <subject> <!-- reference value="Location/oyster-farm"/ --> <display value="Sonoma oyster farm"/> </subject> <effectiveDateTime value="2017-10-12"/> <issued value="2017-10-14T23:11:24Z"/> <performer> <reference value="Practitioner/f005"/> <display value="A. Langeveld"/> </performer> <!-- results of this Qualtiattive PCR is a choice of Positive/Negative and Inconclusive --> <valueCodeableConcept> <!-- SNOMED CT codes --> <coding> <system value="http://snomed.info/sct"/> <code value="10828004"/> <display value="Positive (qualifier value)"/> </coding> <!-- local code translation --> <coding> <system value="http://sonomacounty.ca.gov/Health/Public-Health/Laboratory/result-codes"/> <code value="POSITIVE"/> <display value="POSITIVE"/> </coding> <text value="POSITIVE"/> </valueCodeableConcept> <interpretation> <coding> <system value="http://terminology.hl7.org/CodeSystem/v3-ObservationInterpretation"/> <code value="A"/> <display value="Abnormal"/> </coding> </interpretation> <specimen> <display value="Live Oysters Acc#20171014-1234"/> </specimen> <referenceRange> <text value="NEGATIVE"/> </referenceRange>
</Observation>