wondering what the properties field drives. I notice that in many cases that is the only different between one loinc vs another. I see SCnc, MCnc, CCnc, wondering what those mean. Is there something that explains the various property types out there and what they mean? Thanks.

Hello, please review the LOINC User’s Guide section 2.3 for the formal description. I like to think of this attribute as keeping numeric values in distinct aggregates (apples and apples vs apples and oranges). A value of 25 could be 25 mg/dL, 25 mmol/L, 25 IU/L; these are all very different in concentration basis. Having distinct LOINC codes allows the computers to recognize these are not to be placed on the same reference line, nor trend them together.

Hope this helps!