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.

LOINCBoth

LOINC Code 7540-8: Oat pollen IgE Qn (S)

Name: LOINC Code 7540-8: Oat pollen IgE Qn (S)
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:55.158Z

7540-8 is a LOINC code used to identify Oat pollen 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 Avena sativa cultivated 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 Avena sativa cultivated 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: DEPRECATED
Order vs observation: Both

What it does not mean

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

Key facts

Deprecated Oat cultivated IgE Ab [Units/volume] in Serum
Avena sativa cultivated Ab.IgE
This is the POLLEN allergen
ABS; Aby; Allergen; Allergens; ALLERGY TESTING; Antby; Anti; Antibodies; Antibody; Arbitrary concentration; Autoantibodies; Autoantibody; Cult; Cultivated oat; Cultivated oat grass; f007; f7; g014; g14; Immune globulin E; Immunoglobulin E; Oat; Oat Poln; Oats; 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

Oat pollen IgE Qn (S)Deprecated Oat cultivated IgE Ab [Units/volume] in SerumDeprecated Oat Poln IgE QnAvena sativa cultivated Ab.IgEALLERGYOat pollen allergy testACnc

Frequently asked questions

Code details

Code7540-8

SystemLOINC

Display nameOat pollen IgE Qn (S)

DescriptionAvena sativa cultivated Ab.IgE

Short nameDeprecated Oat Poln IgE Qn

ComponentAvena sativa cultivated Ab.IgE

PropertyACnc

TimingPt

System (specimen)Ser

ScaleQn

ClassALLERGY

StatusDEPRECATED

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released1.0h(2)

Last changed2.69

Consumer names

Oat pollen allergy test

Part names

Avena sativa cultivated Ab.IgEACncPtSerQnOat Pollen (Avena sativa cultivated) 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.