LOINCActiveBoth

LOINC Code 12265-5: Urea nitrogen (Periton fld) [Mass/Vol]

12265-5 is a LOINC code used to identify Urea nitrogen (Periton fld) [Mass/Vol] in laboratory and clinical observation data. You may see this code in lab systems, lab reports, EHR exports, interoperability feeds, or other structured clinical data exchanges. LOINC codes identify tests, measurements, observations, survey items, and clinical questions in a standardized way. It is associated with the component Urea nitrogen. It is commonly used with the system or sample type Periton fld.

Reviewed by HealthAssure Clinical TeamUpdated 25 May 2026

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. It is commonly used with the system or sample type Periton fld.

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: Both

What it does not mean

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

Key facts

  • Urea nitrogen [Mass/volume] in Peritoneal fluid
  • Urea nitrogen
  • Ascites; Ascitic fluid; Ascitis; Blood urea nitrogen; Chemistry; Level; Mass concentration; N; N2; Nit; Peritoneal fluid; Point in time; Prt; 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

Urea nitrogen (Periton fld) [Mass/Vol]Urea nitrogen [Mass/volume] in Peritoneal fluidUrea nit Prt-mCncUrea nitrogenCHEMUrea Nitrogen (BUN), Peritoneal fluidMCnc

Frequently asked questions

Code details

Code12265-5
SystemLOINC
Display nameUrea nitrogen (Periton fld) [Mass/Vol]
DescriptionUrea nitrogen
Short nameUrea nit Prt-mCnc
ComponentUrea nitrogen
PropertyMCnc
TimingPt
System (specimen)Periton fld
ScaleQn
ClassCHEM
Example unitsmg/dL
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0j-a
Last changed2.73

Consumer names

Urea Nitrogen (BUN), Peritoneal fluid

Part names

Urea nitrogenMCncPtPeriton fldQnMass ConcentrationPoint in time (spot)Peritoneal fluid

About this content

This page is prepared by HealthAssure's clinical team using official coding standards from LOINC. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.

LOINC Code 12265-5 | HealthAssure