Observation-example-herd1.xml

An example of a herd screening ELISA assay for Mycoplasmal Pneumonia in Pigs. (id = "herd1")

<Observation xmlns="http://hl7.org/fhir">
  <id value="herd1"/> 
  <!--     the mandatory status     -->
  <text> <status value="generated"/> <div xmlns="http://www.w3.org/1999/xhtml"><p> <b> Generated Narrative with Details</b> </p> <p> <b> id</b> : herd1</p> <p> <b> status</b> : final</p> <p> <b> category</b> : Laboratory <span> (Details : {http://hl7.org/fhir/observation-category code 'laboratory' = 'Laboratory',
           given as 'Laboratory'})</span> </p> <p> <b> code</b> : Mycoplasma hyopneumoniae - MHP <span> (Details : {LOINC code '80219-9' = 'Mycoplasma hyopneumoniae Ab sample/Positive control
           in Serum by Immunoassay', given as 'Mycoplasma hyopneumoniae Ab sample/Positive control
           in Serum by Immunoassay'}; {http://acme.org/devices/clinical-codes code 'Mycoplasma' =
           'Mycoplasma', given as 'Mycoplasma'})</span> </p> <p> <b> subject</b> : <a> Group/herd1</a> </p> <p> <b> context</b> : part of a health assurance program</p> <p> <b> effective</b> : 20/11/2017</p> <p> <b> value</b> : 0.2 % (sample/positive control)<span>  (Details: UCUM code % = '%')</span> </p> <p> <b> interpretation</b> : Negative <span> (Details : {http://hl7.org/fhir/v2/0078 code 'NEG' = 'Negative', given as 'Negative'})</span> </p> <p> <b> specimen</b> : <a> 30 serum</a> </p> <h3> ReferenceRanges</h3> <table> <tr> <td> -</td> <td> <b> Text</b> </td> </tr> <tr> <td> *</td> <td> &gt;0.4 Positive; 0.3 to 0.4 Suspect &lt; 0.3 Negative</td> </tr> </table> </div> </text> <status value="final"/> 
  <!--    category code is A code that classifies the general type of observation being made.
   This is used for searching, sorting and display purposes.   -->
  <category> 
    <coding> 
      <system value="http://hl7.org/fhir/observation-category"/> 
      <code value="laboratory"/> 
      <display value="Laboratory"/> 
    </coding> 
    <text value="Laboratory"/> 
  </category> 
  <!--    
    Observations are often coded in multiple code systems.
      - LOINC provides codes of varying granularity (though not usefully more specific
   in this particular case) and more generic LOINCs  can be mapped to more specific codes
   as shown here
      - snomed provides a clinically relevant code that is usually less granular than
   LOINC
      - the source system provides its own code, which may be less or more granular than
   LOINC
      -->
  <code> 
    <!--     LOINC - always recommended to have a LOINC code     -->
    <coding> 
      <system value="http://loinc.org"/> 
      <code value="80219-9"/> 
      <!--   more generic methodless LOINC   -->
      <display value="Mycoplasma hyopneumoniae Ab sample/Positive control in Serum by Immunoassay"/> 
    </coding> 
    <!--     Also, a local code specific to the source system     -->
    <coding> 
      <system value="http://acme.org/devices/clinical-codes"/> 
      <code value="Mycoplasma"/> 
      <display value="Mycoplasma"/> 
    </coding> 
    <text value="Mycoplasma hyopneumoniae - MHP"/> 
  </code> 
  <!--      subject is a herd of 2500 breding sows    -->
  <subject> 
    <reference value="Group/herd1"/> 
  </subject> 
  <context> 
    <display value="part of a health assurance program"/> 
  </context> 
  <effectiveDateTime value="2017-11-20"/> 
  <!--     In FHIR, units may be represented twice. Once in the
    agreed human representation, and once in a coded form.
    Both is best, since it's not always possible to infer
    one from the other in code.

    When a computable unit is provided, UCUM (http://unitsofmeasure.org)
    is always preferred, but it doesn't provide notional units (such as
    "tablet"), etc. For these, something else is required (e.g. SNOMED CT)
       -->
  <valueQuantity> 
    <value value="0.2"/> 
    <unit value="% (sample/positive control)"/> 
    <system value="http://unitsofmeasure.org"/> 
    <code value="%"/> 
  </valueQuantity> 
  <interpretation> 
    <coding> 
      <system value="http://hl7.org/fhir/v2/0078"/> 
      <code value="NEG"/> 
      <display value="Negative"/> 
    </coding> 
    <text value="Negative"/> 
  </interpretation> 
  <!--    Specimen is a pooled serology sample of 30 animals.   -->
  <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>