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.

LOINCActiveObservation

LOINC Code 31500-2: Ganglioside GM1 IgG+IgM Qn (S)

Name: LOINC Code 31500-2: Ganglioside GM1 IgG+IgM Qn (S)
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:17.664Z

31500-2 is a LOINC code used to identify Ganglioside GM1 IgG+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 Ganglioside GM1 Ab.IgG+IgM. 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 Ganglioside GM1 Ab.IgG+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: Observation

What it does not mean

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

Key facts

Ganglioside GM1 IgG+IgM Ab [Units/volume] in Serum
Ganglioside GM1 Ab.IgG+IgM
ABS; Aby; Antby; Anti; Antibodies; Antibody; Arbitrary concentration; Autoantibodies; Autoantibody; Ganglioside monosialo; GM1 Gangl; Immune globulin G; Immune globulin M; Immunoglobulin G; Immunoglobulin M; Monosialoganglioside; Point in time; QNT; Quan; Quant; Quantitative; Random; Serology; 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

Ganglioside GM1 IgG+IgM Qn (S)Ganglioside GM1 IgG+IgM Ab [Units/volume] in SerumGM1 Gangl IgG+IgM Ser-aCncGanglioside GM1 Ab.IgG+IgMSEROGanglioside GM1 IgG+IgM, BloodACnc

Frequently asked questions

Code details

Code31500-2

SystemLOINC

Display nameGanglioside GM1 IgG+IgM Qn (S)

DescriptionGanglioside GM1 Ab.IgG+IgM

Short nameGM1 Gangl IgG+IgM Ser-aCnc

ComponentGanglioside GM1 Ab.IgG+IgM

PropertyACnc

TimingPt

System (specimen)Ser

ScaleQn

ClassSERO

Example unitsarb U/mL

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.07

Last changed2.73

Consumer names

Ganglioside GM1 IgG+IgM, Blood

Part names

Ganglioside GM1 Ab.IgG+IgMACncPtSerQnGanglioside GM1 IgG+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.