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 49740-4: Yellow Hornet IgG (S) [Mass/Vol]

Name: LOINC Code 49740-4: Yellow Hornet IgG (S) [Mass/Vol]
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:33.942Z

49740-4 is a LOINC code used to identify Yellow Hornet IgG (S) [Mass/Vol] 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 Dolichovespula arenaria Ab.IgG. 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 Dolichovespula arenaria Ab.IgG. 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

Yellow Hornet IgG Ab [Mass/volume] in Serum
Dolichovespula arenaria Ab.IgG
ABS; Aby; Aerial yellow jacket; Allergen; Allergens; ALLERGY TESTING; Antby; Anti; Antibodies; Antibody; Autoantibodies; Autoantibody; i005; i5; Immune globulin G; Immunoglobulin G; Level; Mass concentration; Point in time; QNT; Quan; Quant; Quantitative; Random; Serum; SR; Wasp; Yellow hornet; Yelow-faced hornet

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

Yellow Hornet IgG (S) [Mass/Vol]Yellow Hornet IgG Ab [Mass/volume] in SerumYellow Hornet IgG-mCncDolichovespula arenaria Ab.IgGALLERGYYellow hornet IgG antibodyMCnc

Frequently asked questions

Code details

Code49740-4

SystemLOINC

Display nameYellow Hornet IgG (S) [Mass/Vol]

DescriptionDolichovespula arenaria Ab.IgG

Short nameYellow Hornet IgG-mCnc

ComponentDolichovespula arenaria Ab.IgG

PropertyMCnc

TimingPt

System (specimen)Ser

ScaleQn

ClassALLERGY

Example unitsug/mL

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.22

Last changed2.73

Consumer names

Yellow hornet IgG antibody

Part names

Dolichovespula arenaria Ab.IgGMCncPtSerQnYellow Hornet (Dolichovespula arenaria) IgGMass 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.