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 79420-6: Miscellaneous allergen IgE Qn (S)

Name: LOINC Code 79420-6: Miscellaneous allergen IgE Qn (S)
Creator: HealthAssure Clinical Team
Published: 2026-05-21T09:00:01.837Z

79420-6 is a LOINC code used to identify Miscellaneous allergen IgE Qn (S) 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 Allergen.miscellaneous Ab.IgE. It is commonly used with the system or sample type Ser.

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 Allergen.miscellaneous Ab.IgE. It is commonly used with the system or sample type Ser.

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

What it does not mean

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

Key facts

Miscellaneous allergen IgE Ab [Units/volume] in Serum
Allergen.miscellaneous Ab.IgE
Used to report the quantitative levels for an unspecified allergen. The allergen will be specified elsewhere in the message.
ABS; Aby; Allergen; Allergens; ALLERGY TESTING; Alrgen; Antby; Anti; Antibodies; Antibody; Arbitrary concentration; Autoantibodies; Autoantibody; Immune globulin E; Immunoglobulin E; LimitedUseLabOrders; Misc Allergen; Misc allergen IgE; Point in time; QNT; Quan; Quant; Quantitative; Random; Serum; SR

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

Miscellaneous allergen IgE Qn (S)Miscellaneous allergen IgE Ab [Units/volume] in SerumMisc Allergen IgE QnAllergen.miscellaneous Ab.IgEALLERGYMiscellaneous allergen allergy testACnc

Frequently asked questions

Code details

Code79420-6

SystemLOINC

Display nameMiscellaneous allergen IgE Qn (S)

DescriptionAllergen.miscellaneous Ab.IgE

Short nameMisc Allergen IgE Qn

ComponentAllergen.miscellaneous Ab.IgE

PropertyACnc

TimingPt

System (specimen)Ser

ScaleQn

ClassALLERGY

Example unitskIU/L

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.54

Last changed2.73

Consumer names

Miscellaneous allergen allergy test

Part names

Allergen.miscellaneous Ab.IgEACncPtSerQnAllergen.miscellaneous IgEArbitrary ConcentrationPoint in time (spot)Serum

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.