> If LDT (and therefore the source of your results) uses no coding
> system, do you rely on the fact that the lab *surely* (??) uses some
> arbitrary labelling system ("code") of its own e.g. haemoglobin may
> be "Hgb", haematocrit may be "Hct" and it is with these that you
> populate test_type for that particular test_org?
Precisely.
> And so in test_type is the value for coding_system kept "NULL"?
Yes.
> PS in the table test_result the field id should be renamed pk
> (better now, than later ;-))
Well :-)
Karsten
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