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Lab developed tests (some of them may be coverable)
manual assessment of specimen (urin color / clarity, specimen characteristics (gradeing hemolysis, lipemia), grossing)
calculations (if it is not performed by the instrument)
not EVERY result needs a Unique identifier
https://loinc.org/65634-8/ or https://loinc.org/34535-5/
in both of these the map to LOINCs would not neccessarily end up with a testkit/instrument device identifier, since it is the calculation …