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 42579-3: A. fumigatus IgM Qn (S)

Name: LOINC Code 42579-3: A. fumigatus IgM Qn (S)
Creator: HealthAssure Clinical Team
Published: 2026-05-25T17:13:11.347Z

42579-3 is a LOINC code used to identify A. fumigatus IgM 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 Aspergillus fumigatus Ab.IgM. 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 Aspergillus fumigatus Ab.IgM. 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

Aspergillus fumigatus IgM Ab [Units/volume] in Serum
Aspergillus fumigatus Ab.IgM
A fumgtus; A fumigatus; ABS; Aby; Antby; Anti; Antibodies; Antibody; Arbitrary concentration; Asperg; Aspergil; Aspergilis; Aspergilla; Aspergillin; Aspergillosis; Aspergils; Aspergilus; Autoantibodies; Autoantibody; Farmers lung; Fum; ID; Immune globulin M; Immunoglobulin M; Infectious Disease; InfectiousDisease; m003; m3; Microbiology; 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.

Related SNOMED CT concepts

705114005SNOMED CT mapping for A. fumigatus IgM Qn (S) (42579-3)

Related observations and tests

SNOMED_CT 705114005high

LOINC Code System

Source: LOINC-SNOMED cooperation package

Common synonyms

A. fumigatus IgM Qn (S)Aspergillus fumigatus IgM Ab [Units/volume] in SerumA fumgtus IgM Ser-aCncAspergillus fumigatus Ab.IgMMICROAspergillus fumigatus IgM antibody, BloodACnc

Frequently asked questions

Code details

Code42579-3

SystemLOINC

Display nameA. fumigatus IgM Qn (S)

DescriptionAspergillus fumigatus Ab.IgM

Short nameA fumgtus IgM Ser-aCnc

ComponentAspergillus fumigatus Ab.IgM

PropertyACnc

TimingPt

System (specimen)Ser

ScaleQn

ClassMICRO

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.16

Last changed2.82

Consumer names

Aspergillus fumigatus IgM antibody, Blood

Part names

Aspergillus fumigatus Ab.IgMACncPtSerQnAspergillus fumigatus IgMArbitrary 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.