PKB will support structured numeric lab results sent in HL7 ORU^R01 messages

We are adding support for customers to send laboratory test results in structured numeric format via the HL7 API. Currently, if a laboratory test result includes a comparator (e.g. “<5”) it is treated as a text result and shows on the baseline of the test’s graph. By supporting structured numeric results, we can plot these on the graph on a numeric scale, thus making the graph more useful and clear for these results.

vitamind

If PKB receives a laboratory test result in an HL7 ORU^R01 message where the data type in OBX-2 is SN (Structured Numeric) then:

  • A datapoint will appear on the graph, at the numeric value specified, with an annotation to show the test result value.
  • The range for the datapoint will show on the graph, if provided in OBX-7.
  • The graph colour will show if a result is in or out of range.
  • The result and range will also be in the details table below the graph.

For a transition period, PKB will continue to accept unstructured ranged results in an SN value (e.g. “<10” rather than “<^10”). Any occurrences will be logged and customers will be given the opportunity to fix their data before we deprecate support for this.

Results where OBX-2 is not SN will not be affected by these changes.

Further technical detail:

  • To provide a ranged result, OBX-2 must be SN.
  • OBX-5.1 must either be blank (“=” will be assumed), or else contain a supported comparator. Other valid SN data (e.g. ratios, ranges) will be silently ignored by PKB. The supported comparators are: =, <, <=, >, >=
  • OBX-5.2 must contain a valid number.
  • After the transition period, an error will be returned if SN is declared but the above criteria are not met.
Example message for result with SN data type:
MSH|^~\&|Corepoint|TDL|HL7API|PKB|201303080949||ORU^R01|ABC0000000001|P|2.4
PID|||5555555555^^^NHS^NH||Smith^John^Joe^^Mr||19700101|M|||My flat name^1, The Road^London^London^SW1A 1AA^GBR|||||||||||||||||||N|
OBR|1|12F000005|12F000005|BONE^Bone profile^WinPath||201805030948|201805030848||||||||SST|E85109||||||201303080949||CHE|F
OBX|1|SN|VITDI^Vitamin D^Winpath||<^5|ng/mL|30-50||||F
During transition period, messages with unstructured ranged results will continue to show as a text result:
MSH|^~\&|Corepoint|TDL|HL7API|PKB|201303080949||ORU^R01|ABC0000000001|P|2.4
PID|||5555555555^^^NHS^NH||Smith^John^Joe^^Mr||19700101|M|||My flat name^1, The Road^London^London^SW1A 1AA^GBR|||||||||||||||||||N|
OBR|1|12F000005|12F000005|BONE^Bone profile^WinPath||201805030948|201805030848||||||||SST|E85109||||||201303080949||CHE|F
OBX|1|SN|VITDI^Vitamin D^Winpath||<5|ng/mL|30-50||||F

More information will be in our HL7 API documentation when the feature is released this month. We welcome any feedback on these changes, please contact us with comments or queries.

 

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google+ photo

You are commenting using your Google+ account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

w

Connecting to %s