<Observation xmlns="http://hl7.org/fhir"> <identifier> <system value="localHospitalName" /> <value value="pat1obs1" /> </identifier> <status value="final" /> <code> <coding> <system value="http://loinc.org" /> <code value="59260-0" /> <display value="Hemoglobin [Moles/volume] in Blood" /> </coding> </code> <subject> <reference value="Patient?identifier=localHospitalName|patient1" /> </subject> <encounter> <reference value="Encounter?identifier=localHospitalName|encounter11" /> </encounter> <effectiveDateTime value="2019-01-03T02:10:00+01:00" /> <valueQuantity> <value value="2.39" /> <unit value="mmol/l" /> <system value="http://unitsofmeasure.org" /> </valueQuantity> </Observation>