Using Laboratory Catalogue

[lpg-tech]

The prescription of laboratory tests is based on the assumption that the client wishes to order certain individual tests or test panels. In doing so, he encounters specifications of the laboratory (pre-analytical conditions, additionally required information) or legal regulations (e.g. limitations of the analysis list). This data is available in the laboratory catalogue, also known as the laboratory compendium. Since laboratory techniques and legal requirements are constantly changing, it should be possible to feed all this data dynamically to the prescribing system. This requires the possibility of dynamically pre-filling the questionnaire for the laboratory prescription with data from the laboratory catalogue. This could be implemented as follows:

1. the questionnaire can very well contain the element item.answerOption.valueReference = Reference(ServiceRequest/SomeTest). However, this item.type cannot be displayed in the LHC Forms rendering: (https://github.com/lhncbc/lforms/blob/master/r4-support.md)
2. The prescribing system should be able to fetch FHIR Resources, e.g. a specific PlanDefinition or a specific SpecimenDefinition, from a FHIR server and pre-populate data in the Questionnaire.