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 59834-2: Creatinine reduction ratio [Mass fraction]

Name: LOINC Code 59834-2: Creatinine reduction ratio [Mass fraction]
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:39.744Z

59834-2 is a LOINC code used to identify Creatinine reduction ratio [Mass fraction] 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 reduction ratio. It is commonly used with the system or sample type Ser/Plas.

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 reduction ratio. It is commonly used with the system or sample type Ser/Plas.

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 reduction ratio in Serum or Plasma
Creatinine reduction ratio
Chemistry; CR; Crea; Creat; CRR; Mass fraction; Percent; Pl; Plasma; Plsm; Point in time; QNT; Quan; Quant; Quantitative; Random; SerP; SerPl; SerPlas; Serum; Serum or plasma; SR

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 reduction ratio [Mass fraction]Creatinine reduction ratio in Serum or PlasmaCreatinine reduction ratio MFr SerPlCreatinine reduction ratioCHEMCreatinine reduction ratio, BloodMFr

Frequently asked questions

Code details

Code59834-2

SystemLOINC

Display nameCreatinine reduction ratio [Mass fraction]

DescriptionCreatinine reduction ratio

Short nameCreatinine reduction ratio MFr SerPl

ComponentCreatinine reduction ratio

PropertyMFr

TimingPt

System (specimen)Ser/Plas

ScaleQn

ClassCHEM

Example units%

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.32

Last changed2.70

Consumer names

Creatinine reduction ratio, Blood

Part names

Creatinine reduction ratioMFrPtSer/PlasQnMass fractionPoint in time (spot)Serum or Plasma

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.