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 57711-4: Unique bar code number Nom (Initial sample) [ID]

Name: LOINC Code 57711-4: Unique bar code number Nom (Initial sample) [ID]
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:38.757Z

57711-4 is a LOINC code used to identify Unique bar code number Nom (Initial sample) [ID] 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 Unique bar code number. It is commonly used with the system or sample type Initial sample.

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 Unique bar code number. It is commonly used with the system or sample type Initial sample.

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

Unique bar code number of Initial sample
Unique bar code number
Ident; Identifier; No; Nominal; Num; Point in time; Random; SPEC; Unique bar code #

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

Unique bar code number Nom (Initial sample) [ID]Unique bar code number of Initial sampleUnique bar code # Initial sampleUnique bar code numberSPECUnique bar code number, Initial SampleID

Frequently asked questions

Code details

Code57711-4

SystemLOINC

Display nameUnique bar code number Nom (Initial sample) [ID]

DescriptionUnique bar code number

Short nameUnique bar code # Initial sample

ComponentUnique bar code number

PropertyID

TimingPt

System (specimen)Initial sample

ScaleNom

ClassSPEC

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.29

Last changed2.36

Consumer names

Unique bar code number, Initial Sample

Part names

Unique bar code numberIDPtInitial sampleNomIdentifierPoint 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.