`lab` table - understanding the difference between 'labmeasurenameinterface' and 'labmeasurenamesystem'

[Thomas Frost]

Hi,

I'm struggling to understand the difference in meaning between labmeasurenameinterface and labmeasurenamesystem. If I look at a labname like CRP or CRP-hs, there doesn't seem to be a consistent pattern between their units (in terms of either mg/L or mg/dL).

To give an example using the following sampled table, I am struggling to figure out the actual unit for the value in labresult and also why labresult and labresulttext will sometimes (but not always) differ by a factor of 10.

For the latter issue - as far as I can tell, this only happens when labmeasurenameinterface is mg/L, but not all the time, and not with any correlation to labmeasurenamesystem. Any insights here?

patientunitstayid	labresultoffset	labname	labresult	labresulttext	labmeasurenameinterface	labmeasurenamesystem
244649	-104	CRP	4.0	4.0	mg/dL	mg/dL
254358	-3787	CRP-hs	41.66	41.66	mg/dL	mg/L
254358	4973	CRP-hs	1.7	1.70	mg/dL	mg/L
257301	25879	CRP	25.0	25.0	mg/dL	mg/dL
263285	-1	CRP	13.0	1.3	mg/L	mg/dL
264849	41	CRP	4535.0	453.5	mg/L	mg/dL
266128	1207	CRP	454.0	45.4	mg/L	mg/dL
276487	7050	CRP-hs	1.97	1.97	mg/dL	mg/L
284593	-1192	CRP	22.0	2.2	mg/L	mg/dL
3125720	-2534	CRP-hs	172.0	172.0	mg/L	mg/L
3132008	-10291	CRP	241.0	241.0	mg/L	mg/dL