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 56738-8: Ganglioside GM2 IgM IB Ql (S)

Name: LOINC Code 56738-8: Ganglioside GM2 IgM IB Ql (S)
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:38.264Z

56738-8 is a LOINC code used to identify Ganglioside GM2 IgM IB Ql (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 GM2 Ab.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 GM2 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: DEPRECATED
Order vs observation: Both
Method: IB

What it does not mean

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

Key facts

Deprecated Ganglioside GM2 IgM Ab [Presence] in Serum by Immunoblot
Ganglioside GM2 Ab.IgM
ABS; Aby; Antby; Anti; Antibodies; Antibody; Autoantibodies; Autoantibody; Blt; GM2 Gangl; IMMUNE BLOT; Immune globulin M; Immunobl; Immunoblot; Immunoglobulin M; Monosialoganglioside; Ordinal; Point in time; PR; QL; Qual; Qualitative; Random; RIBA; Screen; Serology; Serum; SR; WB; WBLOT; West blot; West blt; Western blot

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 GM2 IgM IB Ql (S)Deprecated Ganglioside GM2 IgM Ab [Presence] in Serum by ImmunoblotDeprecated GM2 Gangl IgM Ser Ql IBGanglioside GM2 Ab.IgMSEROGanglioside GM2 IgM antibody, BloodPrThr

Frequently asked questions

Code details

Code56738-8

SystemLOINC

Display nameGanglioside GM2 IgM IB Ql (S)

DescriptionGanglioside GM2 Ab.IgM

Short nameDeprecated GM2 Gangl IgM Ser Ql IB

ComponentGanglioside GM2 Ab.IgM

PropertyPrThr

TimingPt

System (specimen)Ser

ScaleOrd

MethodIB

ClassSERO

StatusDEPRECATED

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.29

Last changed2.58

Consumer names

Ganglioside GM2 IgM antibody, Blood

Part names

Ganglioside GM2 Ab.IgMPrThrPtSerOrdIBGanglioside GM2 IgMPresence or ThresholdPoint in time (spot)SerumImmunoblot

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.