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 74900-2: Lactulose/Creatinine post Unsp g sugar solution PO (5 hour U) [Molar ratio]

Name: LOINC Code 74900-2: Lactulose/Creatinine post Unsp g sugar solution PO (5 hour U) [Molar ratio]
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:55.156Z

74900-2 is a LOINC code used to identify Lactulose/Creatinine post Unsp g sugar solution PO (5 hour U) [Molar 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 Lactulose/Creatinine^post XXX g sugar solution PO. 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 Lactulose/Creatinine^post XXX g sugar solution PO. 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

Lactulose/Creatinine [Molar ratio] in 5 hour Urine --post XXX g sugar solution PO
Lactulose/Creatinine^post XXX g sugar solution PO
5 hours; 5.0Hr; 5HR; After; Chemistry; CR; Crea; Creat; p sug sol; PST; QNT; Quan; Quant; Quantitative; Scrto; Substance concentration ratio; Substance 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

Lactulose/Creatinine post Unsp g sugar solution PO (5 hour U) [Molar ratio]Lactulose/Creatinine [Molar ratio] in 5 hour Urine --post XXX g sugar solution POLactulose/Creat p sug sol 5h Ur-sRtoLactulose/Creatinine^post XXX g sugar solution POCHEMLactulose/Creatinine after Unsp g Sugar Solution by mouth, UrineSRto

Frequently asked questions

Code details

Code74900-2

SystemLOINC

Display nameLactulose/Creatinine post Unsp g sugar solution PO (5 hour U) [Molar ratio]

DescriptionLactulose/Creatinine^post XXX g sugar solution PO

Short nameLactulose/Creat p sug sol 5h Ur-sRto

ComponentLactulose/Creatinine^post XXX g sugar solution PO

PropertySRto

Timing5H

System (specimen)Urine

ScaleQn

ClassCHEM

Example unitsmmol/mol creatinine

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.48

Last changed2.54

Consumer names

Lactulose/Creatinine after Unsp g Sugar Solution by mouth, Urine

Part names

Lactulose/Creatinine^post XXX g sugar solution POSRto5HUrineQnSubstance Ratio5 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.