LOINCActiveBoth

LOINC Code 51843-1: Malonate/Creatinine (U) [Mass ratio]

51843-1 is a LOINC code used to identify Malonate/Creatinine (U) [Mass ratio] 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 Malonate/Creatinine. It is commonly used with the system or sample type Urine.

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 Malonate/Creatinine. 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

  • Malonate/Creatinine [Mass Ratio] in Urine
  • Malonate/Creatinine
  • Chemistry; CR; Crea; Creat; Malonic acid; Mass concentration ratio; Mass ratio; MCRto; Point in time; Propanedioate; Propanedioic acid; QNT; Quan; Quant; Quantitative; Random; UA; UCr; UR; Urn

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

Malonate/Creatinine (U) [Mass ratio]Malonate/Creatinine [Mass Ratio] in UrineMalonate/Creat UrMalonate/CreatinineCHEMMalonate/Creatinine, UrineMRto

Frequently asked questions

Code details

Code51843-1
SystemLOINC
Display nameMalonate/Creatinine (U) [Mass ratio]
DescriptionMalonate/Creatinine
Short nameMalonate/Creat Ur
ComponentMalonate/Creatinine
PropertyMRto
TimingPt
System (specimen)Urine
ScaleQn
ClassCHEM
Example unitsmg/g creatinine
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.24
Last changed2.70

Consumer names

Malonate/Creatinine, Urine

Part names

Malonate/CreatinineMRtoPtUrineQnMass RatioPoint in time (spot)

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.