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 7746-1: Trimellitic anhydride (TMA) IgE Qn (S)

Name: LOINC Code 7746-1: Trimellitic anhydride (TMA) IgE Qn (S)
Creator: HealthAssure Clinical Team
Published: 2026-05-25T17:13:11.347Z

7746-1 is a LOINC code used to identify Trimellitic anhydride (TMA) 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 Trimellitic anhydride Ab.IgE. It is commonly used with the system or sample type Ser.

Reviewed by HealthAssure Clinical TeamUpdated 25 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 Trimellitic anhydride 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

Trimellitic anhydride (TMA) IgE Ab [Units/volume] in Serum
Trimellitic anhydride Ab.IgE
ABS; Aby; Allergen; Allergens; ALLERGY TESTING; Anhydrid; Antby; Anti; Antibodies; Antibody; Arbitrary concentration; Autoantibodies; Autoantibody; Immune globulin E; Immunoglobulin E; k86; Point in time; QNT; Quan; Quant; Quantitative; Random; Serum; SR; TMA; Trimelllitic anhydride

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.

Related SNOMED CT concepts

705114005SNOMED CT mapping for Trimellitic anhydride (TMA) IgE Qn (S) (7746-1)

Related observations and tests

SNOMED_CT 705114005high

LOINC Code System

Source: LOINC-SNOMED cooperation package

Common synonyms

Trimellitic anhydride (TMA) IgE Qn (S)Trimellitic anhydride (TMA) IgE Ab [Units/volume] in SerumTMA IgE QnTrimellitic anhydride Ab.IgEALLERGYTrimellitic Anhydride (TMA) allergy testACnc

Frequently asked questions

Code details

Code7746-1

SystemLOINC

Display nameTrimellitic anhydride (TMA) IgE Qn (S)

DescriptionTrimellitic anhydride Ab.IgE

Short nameTMA IgE Qn

ComponentTrimellitic anhydride 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 released1.0h(2)

Last changed2.73

Consumer names

Trimellitic Anhydride (TMA) allergy test

Part names

Trimellitic anhydride Ab.IgEACncPtSerQnTMA (Trimellitic anhydride) 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.