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 50772-3: Ganglioside GQ1b IgG/IgM IA (S) [Ratio]

Name: LOINC Code 50772-3: Ganglioside GQ1b IgG/IgM IA (S) [Ratio]
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:34.496Z

50772-3 is a LOINC code used to identify Ganglioside GQ1b IgG/IgM IA (S) [Ratio] 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 GQ1b Ab.IgG/Ganglioside GQ1b 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 GQ1b Ab.IgG/Ganglioside GQ1b 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: Observation
Method: IA

What it does not mean

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

Key facts

Ganglioside GQ1b IgG Ab/IgM Ab [Ratio] in Serum by Immunoassay
Ganglioside GQ1b Ab.IgG/Ganglioside GQ1b Ab.IgM
ABS; Aby; Antby; Anti; Antibodies; Antibody; Autoantibodies; Autoantibody; EIA; ELFA; ELISA; Enzyme immunoassay; GQ1b; GQ1b Gangl; IAA; Immune globulin G; Immune globulin M; Immunoglobulin G; Immunoglobulin M; MEIA; Point in time; QNT; Quan; Quant; Quantitative; Random; Ratios; Rto; Serology; Serum; SR; SUDS; Tetrasialylganglioside

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 GQ1b IgG/IgM IA (S) [Ratio]Ganglioside GQ1b IgG Ab/IgM Ab [Ratio] in Serum by ImmunoassayGQ1b Gangl IgG/IgM Ser IA-RtoGanglioside GQ1b Ab.IgG/Ganglioside GQ1b Ab.IgMSEROGanglioside GQ1b IgG/IgM Antibody, BloodRatio

Frequently asked questions

Code details

Code50772-3

SystemLOINC

Display nameGanglioside GQ1b IgG/IgM IA (S) [Ratio]

DescriptionGanglioside GQ1b Ab.IgG/Ganglioside GQ1b Ab.IgM

Short nameGQ1b Gangl IgG/IgM Ser IA-Rto

ComponentGanglioside GQ1b Ab.IgG/Ganglioside GQ1b Ab.IgM

PropertyRatio

TimingPt

System (specimen)Ser

ScaleQn

MethodIA

ClassSERO

Example unitsIndex value

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.22

Last changed2.73

Consumer names

Ganglioside GQ1b IgG/IgM Antibody, Blood

Part names

Ganglioside GQ1b Ab.IgG/Ganglioside GQ1b Ab.IgMRatioPtSerQnIAPoint in time (spot)SerumImmunoassay

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.