What does this LOINC code represent?

This LOINC code identifies a lab observation, measurement, question, or clinical concept in a standardized format.

Is this enough to understand my test result?

No. The code identifies the test or observation, but the interpretation depends on the actual result, reference range, and clinical context.

LOINCActiveObservation

LOINC Code 12972-6: Urea nitrogen spec 1 (Perit dial fld) [Mass/Vol]

Name: LOINC Code 12972-6: Urea nitrogen spec 1 (Perit dial fld) [Mass/Vol]
Creator: HealthAssure Clinical Team
Published: 2026-05-21T11:17:23.607Z

12972-6 is a LOINC code used to identify Urea nitrogen spec 1 (Perit dial 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^1st specimen. It is commonly used with the system or sample type Dial fld prt.

Reviewed by HealthAssure Clinical TeamUpdated 21 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^1st specimen. 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/volume] in Peritoneal dialysis fluid --1st specimen
Urea nitrogen^1st specimen
Acute specimen; Blood urea nitrogen; Chemistry; Diaf; DiafP; Dialysate; Dialysis fluid; First; Level; Mass concentration; N; N2; Nit; Peritoneal Dialysis fluid; Point in time; Pre immunization; QNT; Quan; Quant; Quantitative; Random; sp1; Spec; 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 spec 1 (Perit dial fld) [Mass/Vol]Urea nitrogen [Mass/volume] in Peritoneal dialysis fluid --1st specimenUrea nit sp1 DiafP-mCncUrea nitrogen^1st specimenCHEMUrea Nitrogen (BUN) specimen 1, Peritoneal dialysis fluidMCnc

Frequently asked questions

Code details

Code12972-6

SystemLOINC

Display nameUrea nitrogen spec 1 (Perit dial fld) [Mass/Vol]

DescriptionUrea nitrogen^1st specimen

Short nameUrea nit sp1 DiafP-mCnc

ComponentUrea nitrogen^1st specimen

PropertyMCnc

TimingPt

System (specimen)Dial fld prt

ScaleQn

ClassCHEM

Example unitsmg/L

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released1.0j-a

Last changed2.42

Consumer names

Urea Nitrogen (BUN) specimen 1, Peritoneal dialysis fluid

Part names

Urea nitrogen^1st specimenMCncPtDial fld prtQnMass ConcentrationPoint in time (spot)Dialysis fluid peritoneal

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.