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 12577-3: Creatinine spec 2 (Perit dial fld) [Mass/Vol]

Name: LOINC Code 12577-3: Creatinine spec 2 (Perit dial fld) [Mass/Vol]
Creator: HealthAssure Clinical Team
Published: 2026-05-21T11:17:23.603Z

12577-3 is a LOINC code used to identify Creatinine spec 2 (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 Creatinine^2nd 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 Creatinine^2nd 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

Creatinine [Mass/volume] in Peritoneal dialysis fluid --2nd specimen
Creatinine^2nd specimen
Chemistry; Convalescent; CR; Crea; Creat; Diaf; DiafP; Dialysate; Dialysis fluid; Kidney; Level; Mass concentration; Nephrology; Peritoneal Dialysis fluid; Point in time; Post immunization; QNT; Quan; Quant; Quantitative; Random; Renal; Second; sp2; Spec

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

Creatinine spec 2 (Perit dial fld) [Mass/Vol]Creatinine [Mass/volume] in Peritoneal dialysis fluid --2nd specimenCreat sp2 DiafP-mCncCreatinine^2nd specimenCHEMCreatinine specimen 2, Peritoneal dialysis fluidMCnc

Frequently asked questions

Code details

Code12577-3

SystemLOINC

Display nameCreatinine spec 2 (Perit dial fld) [Mass/Vol]

DescriptionCreatinine^2nd specimen

Short nameCreat sp2 DiafP-mCnc

ComponentCreatinine^2nd specimen

PropertyMCnc

TimingPt

System (specimen)Dial fld prt

ScaleQn

ClassCHEM

Example unitsmg/dL

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released1.0j-a

Last changed2.34

Consumer names

Creatinine specimen 2, Peritoneal dialysis fluid

Part names

Creatinine^2nd 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.