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 17821-0: Oligoclonal bands Elph Nar (Body fld) [Interp]

Name: LOINC Code 17821-0: Oligoclonal bands Elph Nar (Body fld) [Interp]
Creator: HealthAssure Clinical Team
Published: 2026-05-25T17:13:11.347Z

17821-0 is a LOINC code used to identify Oligoclonal bands Elph Nar (Body fld) [Interp] 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 Protein fractions.oligoclonal bands. It is commonly used with the system or sample type Body fld.

Reviewed by HealthAssure Clinical TeamUpdated 25 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 Protein fractions.oligoclonal bands. It is commonly used with the system or sample type Body fld.

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: Electrophoresis

What it does not mean

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

Key facts

Oligoclonal bands [Interpretation] in Body fluid by Electrophoresis Narrative
Protein fractions.oligoclonal bands
B/F; BF; bod; Bodies; Body fluid; Body fluid, unsp; Chemistry; Elec; Elect; Electr; Electro; Electrophhrs; Electrophrs; Elp; Elph; Ep; Fl; Fld; FLU; Fluid; Frac; Fract; Fraction; Fractionated; Fractionation; Impression; Impression/interpretation of study; Impressions; Interp; Interpretation; M-spikes; Narrative; Point in time; PR; Prot; Random; Report

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.

Related SNOMED CT concepts

705114005SNOMED CT mapping for Oligoclonal bands Elph Nar (Body fld) [Interp] (17821-0)

Related observations and tests

SNOMED_CT 705114005high

LOINC Code System

Source: LOINC-SNOMED cooperation package

Common synonyms

Oligoclonal bands Elph Nar (Body fld) [Interp]Oligoclonal bands [Interpretation] in Body fluid by Electrophoresis NarrativeOligoclonal Bands Fld Elph-ImpProtein fractions.oligoclonal bandsCHEMInterpretation of Oligoclonal bands test result, Body fluidImp

Frequently asked questions

Code details

Code17821-0

SystemLOINC

Display nameOligoclonal bands Elph Nar (Body fld) [Interp]

DescriptionProtein fractions.oligoclonal bands

Short nameOligoclonal Bands Fld Elph-Imp

ComponentProtein fractions.oligoclonal bands

PropertyImp

TimingPt

System (specimen)Body fld

ScaleNar

MethodElectrophoresis

ClassCHEM

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released1.0l

Last changed2.54

Consumer names

Interpretation of Oligoclonal bands test result, Body fluid

Part names

Protein fractions.oligoclonal bandsImpPtBody fldNarElectrophoresisImpression/interpretation of studyPoint in time (spot)Body fluid

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.