Standardized Reference Ranges for LOINC Codes?

Hello everyone,

I am currently working with laboratory data and using LOINC codes for parameter identification. My question is:

Is there a standardized or unified reference range associated with LOINC codes that could be used as a general guideline to classify values as low, normal, or high?

Or are the reference intervals expected to be provided individually by the submitting organization or laboratory for each measurement?

Any clarification on how reference intervals are handled in the context of LOINC-coded data would be highly appreciated.

Thank you in advance!

This older forum post may help address your question.

I’m happy to fill in more information after reading the 2015 post if there are still questions. Thank you!

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OHDSI consortium did a study to identify min and max ranges (for data Quality checking)

local ranges - well yes - but global is cool too. After all, there are similarities as well.

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Hi Gregor,

The short answer is reference ranges are not associated with LOINCs. In the US CLIA and globally usually ISO regulations require each (performing) laboratory to determine the reference ranges for their patient population.

If you are looking for interpretations of reference ranges as low, high,critical high, critical low etc., these are also usually provided where applicable by the performing laboratory for result values.

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