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Ganglioside GM1 (qualitative) in serum by line blot

Published: August 9, 2026Updated: August 16, 2026

This test checks for the presence of GM1 ganglioside in your blood, a type of sugar-lipid that may be linked to certain neurological conditions.

Quick summary

["A GM1 ganglioside test helps identify potential genetic or metabolic disorders affecting nerve function."]

Medically reviewed by WellAlly Editorial TeamLast reviewed August 16, 2026Editorial policy

Key facts at a glance

LOINC
89519-3
Short code
GM1 Gangl IgG+IgM Ser Ql Line blot
Synonyms
GM1 Gangl IgG+IgM Ser Ql Line blot
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
line-blot
CPT
82784
Specimen volume
5 mL
Stability
Room temperature: 4h, Refrigerated: 24h, Frozen: 7d
Hemolysis max
500
Lipemia max
1000
Icterus max
500
TAT
4–24 hours
Order
routine

Why This Test Might Be Ordered

Your healthcare provider may recommend this test if you have symptoms like muscle weakness, developmental delays, or neurological issues that could suggest a rare metabolic disorder. It’s also used in research or specialized diagnostic settings for conditions like GM1 gangliosidosis.

What to Expect During the Test

A small blood sample will be drawn from a vein in your arm. The sample is then analyzed using a line blot technique to detect GM1 ganglioside. Results are qualitative (positive or negative) rather than quantitative.

Understanding Your Results

A positive result means GM1 ganglioside is present in your serum, which may indicate a genetic or metabolic disorder. A negative result suggests no detectable GM1 ganglioside. Follow-up testing or genetic counseling may be needed if results are abnormal.

Common Causes and Considerations

This test is primarily used in research or specialized diagnostic contexts for suspected GM1 gangliosidosis or related conditions. It’s not routinely performed for general health screening.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance: GM1 Ganglioside Testing

Short name

GM1 Ganglioside Screening

Frequently asked questions

What does a positive result mean?
A positive result suggests the presence of GM1 ganglioside in your blood, which may be associated with GM1 gangliosidosis or other rare metabolic disorders affecting nerve cells. This finding warrants further evaluation, including genetic testing or consultation with a specialist in metabolic diseases.
How often should I get this test?
This test is not typically performed as a routine screening test. It may be ordered periodically if you have a known genetic predisposition, symptoms of a suspected disorder, or if part of a specialized diagnostic workup.
Can lifestyle changes affect this test?
No, this test measures a specific biochemical substance in your blood, and lifestyle factors like diet or exercise generally do not influence GM1 ganglioside levels. However, any underlying condition causing elevated levels may require medical management.
  1. 1
    MedlinePlus — Laboratory TestsSource
  2. 2
    Lab Tests OnlineSource
  3. 3
    Mayo Clinic — Tests & ProceduresSource

Click any link to access the full source. PubMed Central (PMC) links provide free full-text access.

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

Medical Disclaimer

This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.

If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.

Medically reviewed by WellAlly Editorial Team Last reviewed August 16, 2026. · Read our editorial policy