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 54220-9: Immune response markers Nar (Specimen) [Interp]

Name: LOINC Code 54220-9: Immune response markers Nar (Specimen) [Interp]
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:36.582Z

54220-9 is a LOINC code used to identify Immune response markers Nar (Specimen) [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 Immune response markers. It is commonly used with the system or sample type XXX.

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 Immune response markers. It is commonly used with the system or sample type XXX.

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

Immune response markers [Interpretation] in Specimen Narrative
Immune response markers
CELL MARKERS; Imm; Impression; Impression/interpretation of study; Impressions; Imun; Imune; Interp; Interpretation; Misc; Miscellaneous; Narrative; Other; Point in time; Random; Report; Spec; To be specified in another part of the message; Unspecified

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

Immune response markers Nar (Specimen) [Interp]Immune response markers [Interpretation] in Specimen NarrativeImmune response markers Spec-ImpImmune response markersCELLMARKInterpretation of Immune response markers test result, SpecimenImp

Frequently asked questions

Code details

Code54220-9

SystemLOINC

Display nameImmune response markers Nar (Specimen) [Interp]

DescriptionImmune response markers

Short nameImmune response markers Spec-Imp

ComponentImmune response markers

PropertyImp

TimingPt

System (specimen)XXX

ScaleNar

ClassCELLMARK

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.27

Last changed2.69

Consumer names

Interpretation of Immune response markers test result, Specimen

Part names

Immune response markersImpPtXXXNarImpression/interpretation of studyPoint 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.