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 73021-8: Fexofenadine induced neutrophil IgM FC Ql

Name: LOINC Code 73021-8: Fexofenadine induced neutrophil IgM FC Ql
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:52.634Z

73021-8 is a LOINC code used to identify Fexofenadine induced neutrophil IgM FC Ql 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 Fexofenadine induced neutrophil Ab.IgM. It is commonly used with the system or sample type Ser/Plas.

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 Fexofenadine induced neutrophil Ab.IgM. It is commonly used with the system or sample type Ser/Plas.

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
Method: Flow cytometry

What it does not mean

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

Key facts

Fexofenadine induced neutrophil IgM Ab [Presence] in Serum or Plasma by Flow cytometry (FC)
Fexofenadine induced neutrophil Ab.IgM
(neut) Ab; (neut) IgM; ABS; Aby; Allegra; Antby; Anti; Antibodies; Antibody; Autoantibodies; Autoantibody; Dynamic; Fastofen; FC; Granulocytic Ab; Immune globulin M; Immunoglobulin M; Neut; Neutr; Neutrophils; Ordinal; Pl; Plasma; Plsm; PMN; PNM; Point in time; PR; QL; Qual; Qualitative; Random; Screen; Serology; SerP; SerPl; SerPlas; Serum; Serum or plasma; SR; Telfast; Tilfur; Vifas

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

Fexofenadine induced neutrophil IgM FC QlFexofenadine induced neutrophil IgM Ab [Presence] in Serum or Plasma by Flow cytometry (FC)Fexofenadine (neut) IgM SerPl Ql FCFexofenadine induced neutrophil Ab.IgMSEROFexofenadine induced neutrophil IgM, BloodPrThr

Frequently asked questions

Code details

Code73021-8

SystemLOINC

Display nameFexofenadine induced neutrophil IgM FC Ql

DescriptionFexofenadine induced neutrophil Ab.IgM

Short nameFexofenadine (neut) IgM SerPl Ql FC

ComponentFexofenadine induced neutrophil Ab.IgM

PropertyPrThr

TimingPt

System (specimen)Ser/Plas

ScaleOrd

MethodFlow cytometry

ClassSERO

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.44

Last changed2.56

Consumer names

Fexofenadine induced neutrophil IgM, Blood

Part names

Fexofenadine induced neutrophil Ab.IgMPrThrPtSer/PlasOrdFlow cytometryFexofenadine induced neutrophil IgMPresence or ThresholdPoint in time (spot)Serum or PlasmaFlow cytometry (FC)

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.