<Observation xmlns="http://hl7.org/fhir"><id value="herd1"/><status value="final"/><category><coding><system value="http://terminology.hl7.org/CodeSystem/observation-category"/><code value="laboratory"/><display value="Laboratory"/></coding><text value="Laboratory"/></category><code><coding><system value="http://loinc.org"/><code value="80219-9"/><display value="Mycoplasma hyopneumoniae Ab sample/Positive control in Serum by Immunoassay"/></coding><coding><system value="http://acme.org/devices/clinical-codes"/><code value="Mycoplasma"/><display value="Mycoplasma"/></coding><text value="Mycoplasma hyopneumoniae - MHP"/></code><subject><reference value="Group/herd1"/></subject><encounter><display value="part of a health assurance program"/></encounter><effectiveDateTime value="2017-11-20"/><valueQuantity><value value="0.2"/><unit value="% (sample/positive control)"/><system value="http://unitsofmeasure.org"/><code value="%"/></valueQuantity><interpretation><coding><system value="http://terminology.hl7.org/CodeSystem/v3-ObservationInterpretation"/><code value="NEG"/><display value="Negative"/></coding><text value="Negative"/></interpretation><specimen><reference value="Specimen/pooled-serum"/><display value="30 serum"/></specimen><referenceRange><text value="&gt;0.4 Positive; 0.3 to 0.4 Suspect &lt; 0.3 Negative"/></referenceRange></Observation>