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.

LOINCObservation

LOINC Code 47535-0: 2-Methyl,3-Hydroxybutyrate/Creatinine (U) [Molar conc ratio]

Name: LOINC Code 47535-0: 2-Methyl,3-Hydroxybutyrate/Creatinine (U) [Molar conc ratio]
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:32.261Z

47535-0 is a LOINC code used to identify 2-Methyl,3-Hydroxybutyrate/Creatinine (U) [Molar conc 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 2-Methyl,3-Hydroxybutyrate/Creatinine. 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 2-Methyl,3-Hydroxybutyrate/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: DEPRECATED
Order vs observation: Observation

What it does not mean

The code identifies the observation or test, not the actual result.

Key facts

Deprecated 2-methyl,3-hydroxybutyrate (C5-OH)/Creatinine [Molecular ratio] in Urine
2-Methyl,3-Hydroxybutyrate/Creatinine
2Me3OH-butyrate; 2-Methyl,3-Hydroxy butyrate; 2-methyl,3-hydroxybutyric acid; 2-Methyl-3-Hydroxybutyrate; 3-Hydroxy-2-Methylbutanoate; 3-Hydroxy-2-Methylbutanoic acid; 3-Hydroxy-2-Methylbutyrate; 3-Hydroxy-2-Methyl-butyrate; 3-hydroxy-2-methylbutyric acid; 3-Hydroxy-2-Methyl-butyric acid; alpha-methyl-beta-hydroxybutyrate; alpha-methyl-beta-hydroxybutyric acid; C5OH; C5-OH; Chemistry; CR; Crea; Creat; HMBA; Hydroxybutyric acid; II; III; Point in time; QNT; Quan; Quant; Quantitative; Random; Substance concentration ratio; 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

2-Methyl,3-Hydroxybutyrate/Creatinine (U) [Molar conc ratio]Deprecated 2-methyl,3-hydroxybutyrate (C5-OH)/Creatinine [Molecular ratio] in UrineDeprecated 2Me3OH-butyrate/creat Ur-sRto2-Methyl,3-Hydroxybutyrate/CreatinineCHEM2-Methyl,3-Hydroxybutyrate/Creatinine, UrineSCrto

Frequently asked questions

Code details

Code47535-0

SystemLOINC

Display name2-Methyl,3-Hydroxybutyrate/Creatinine (U) [Molar conc ratio]

Description2-Methyl,3-Hydroxybutyrate/Creatinine

Short nameDeprecated 2Me3OH-butyrate/creat Ur-sRto

Component2-Methyl,3-Hydroxybutyrate/Creatinine

PropertySCrto

TimingPt

System (specimen)Urine

ScaleQn

ClassCHEM

Example unitsumol/mmol creatinine

StatusDEPRECATED

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.21

Last changed2.70

Consumer names

2-Methyl,3-Hydroxybutyrate/Creatinine, Urine

Part names

2-Methyl,3-Hydroxybutyrate/CreatinineSCrtoPtUrineQnPoint 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.