LOINC Code 12981-7: Urea nitrogen post dialysis/pre dialysis (Perit dial fld) [Mass ratio]

What is this code?

LOINC codes identify tests, measurements, observations, survey items, and clinical questions in a standardized way. It is associated with the component Urea nitrogen^post dialysis/pre dialysis. It is commonly used with the system or sample type Dial fld prt.

When is it used?

• Used in lab systems, EHRs, and clinical data exchange.
• May identify a test, observation, survey item, or clinical document request rather than a diagnosis.
• Status: ACTIVE
• Order vs observation: Observation

What it does not mean

• The code identifies the observation or test, not the actual result.

Key facts

• Urea nitrogen [Mass Ratio] in Peritoneal dialysis fluid --post dialysis/pre dialysis
• Urea nitrogen^post dialysis/pre dialysis
• After; Before; Blood urea nitrogen; Chemistry; Diaf; DiafP; Dialy; Dialysate; Dialysis fluid; Mass concentration ratio; Mass ratio; MCRto; N; N2; Nit; p dialysis; Peritoneal Dialysis fluid; Point in time; post/pre dialysis; PST; QNT; Quan; Quant; Quantitative; Random; UN

Where you may see this code

You may see this code in lab systems, lab reports, EHR exports, interoperability feeds, or other structured clinical data exchanges.

Common synonyms

Frequently asked questions