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GD1b Antibody

Published: July 27, 2026Updated: August 25, 2026

GD1b antibody is a biomarker used to detect the presence of antibodies against the GD1b ganglioside, which is found in nerve cell membranes.

Quick summary

GD1b antibody titer helps diagnose neurological disorders associated with anti-GD1b antibodies.

Medically reviewed by WellAlly Editorial TeamLast reviewed August 25, 2026Editorial policy

Key facts at a glance

Units
titer
Clinical utility
diagnostic
Result kind
qualitative
FDA-cleared
Roche Anti-GD1b, Athersys GD1b Ab
interpretation: {"text":"Titer ≤1: Indicates a normal level of GD1b antibodies, reducing the likelihood of associated neurological disorders.","label":"Normal"}; {"text":"Titer >1: Suggests the presence of GD1b antibodies, which may be associated with autoimmune neuropathies.","label":"Elevated"}

GD1b is a ganglioside, a type of glycosphingolipid, that is abundant in the nervous system. Antibodies against GD1b can be indicative of certain neurological conditions.

The measurement of GD1b antibody titers is primarily used to aid in the diagnosis of autoimmune neuropathies, such as Guillain-Barré syndrome and its variants.

Elevated levels of GD1b antibodies, particularly those exceeding a titer of 1, may suggest the presence of these neurological disorders.

Frequently asked questions

What is the significance of elevated GD1b antibody levels?
Elevated levels may indicate an autoimmune response against nerve tissues, often associated with conditions like Guillain-Barré syndrome.
How is the GD1b antibody test performed?
The test is performed using a blood sample, where the presence and levels of GD1b antibodies are measured.
  1. 1
    Ganglioside Antibodies in Guillain-Barré SyndromeSource
  2. 2
    Clinical Utility of GD1b Antibody TestingSource

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This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.

Medical Disclaimer

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Medically reviewed by WellAlly Editorial Team Last reviewed August 25, 2026. · Read our editorial policy