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.

LOINCActiveBoth

LOINC Code 54374-4: Creatinine/Body weight (24H U) [Relative moles/Time]

Name: LOINC Code 54374-4: Creatinine/Body weight (24H U) [Relative moles/Time]
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:36.582Z

54374-4 is a LOINC code used to identify Creatinine/Body weight (24H U) [Relative moles/Time] 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/body weight. It is commonly used with the system or sample type Urine.

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/body weight. It is commonly used with the system or sample type Urine.

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

Creatinine/Body weight [Moles/kg/time] in 24 hour Urine
Creatinine/body weight
1 day; 24 hours; 24HR; Bdy weight; bod; Bodies; BW; Chemistry; CR; Crea; Creat; Kidney; Nephrology; QNT; Quan; Quant; Quantitative; Renal; UA; UCr; UR; Urn; Wt

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/Body weight (24H U) [Relative moles/Time]Creatinine/Body weight [Moles/kg/time] in 24 hour UrineCreat/BW 24h Ur-RelSRatCreatinine/body weightCHEMCreatinine/Body Weight, UrineRelSRat

Frequently asked questions

Code details

Code54374-4

SystemLOINC

Display nameCreatinine/Body weight (24H U) [Relative moles/Time]

DescriptionCreatinine/body weight

Short nameCreat/BW 24h Ur-RelSRat

ComponentCreatinine/body weight

PropertyRelSRat

Timing24H

System (specimen)Urine

ScaleQn

ClassCHEM

Example unitsmmol/kg/24 H

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.27

Last changed2.70

Consumer names

Creatinine/Body Weight, Urine

Part names

Creatinine/body weightRelSRat24HUrineQnRelative substance rate24 hours

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.