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 29256-5: Fat.microscopic observation Sudan IV stain Nom (Urine sed)

Name: LOINC Code 29256-5: Fat.microscopic observation Sudan IV stain Nom (Urine sed)
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:15.473Z

29256-5 is a LOINC code used to identify Fat.microscopic observation Sudan IV stain Nom (Urine sed) 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 Fat.microscopic observation. It is commonly used with the system or sample type Urine sed.

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 Fat.microscopic observation. It is commonly used with the system or sample type Urine sed.

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
Method: Sudan IV stain

What it does not mean

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

Key facts

Fat.microscopic observation [Identifier] in Urine sediment by Sudan IV stain
Fat.microscopic observation
Identity or presence; Kidney; Nephrology; Nominal; Point in time; Random; Renal; St; Stains; Stn; Sudan IV Stn; Sudn; UA; UR; URINALYSIS; Urine sediment; Urn; UrnS

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

Fat.microscopic observation Sudan IV stain Nom (Urine sed)Fat.microscopic observation [Identifier] in Urine sediment by Sudan IV stainFat UrnS Sudan IV StnFat.microscopic observationUAFat.microscopic observation, Urine sedimentPrid

Frequently asked questions

Code details

Code29256-5

SystemLOINC

Display nameFat.microscopic observation Sudan IV stain Nom (Urine sed)

DescriptionFat.microscopic observation

Short nameFat UrnS Sudan IV Stn

ComponentFat.microscopic observation

PropertyPrid

TimingPt

System (specimen)Urine sed

ScaleNom

MethodSudan IV stain

ClassUA

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.03

Last changed2.73

Consumer names

Fat.microscopic observation, Urine sediment

Part names

Fat.microscopic observationPridPtUrine sedNomSudan IV stainPresence or IdentityPoint in time (spot)Urine sediment

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.