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Ganglioside GM1 in Serum (Qualitative Line Blot)

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

This test detects the presence of GM1 ganglioside, a type of complex carbohydrate found in certain cells, using a specialized line blot assay on serum. It may be ordered to investigate inherited or acquired conditions affecting lipid metabolism or neurological function.

Quick summary

["This test helps identify rare genetic or metabolic disorders linked to abnormal GM1 levels."]

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

Key facts at a glance

LOINC
89518-5
Short code
GM1 Gangl IgM Ser Ql Line blot
Synonyms
GM1 Gangl 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 developmental delays, neurological issues, or a family history of conditions such as GM1 gangliosidosis (also called Morquio syndrome variant). It could also be used in research or specialized diagnostic settings for suspected lipid storage disorders.

What to Expect Before the Test

No special preparation is typically needed. You may have a simple blood draw from a vein in your arm. If you’re taking medications, let your provider know, as certain drugs could affect test results.

What the Results Mean

A positive result indicates the presence of GM1 ganglioside, which may suggest an underlying metabolic or genetic condition. A negative result means no detectable GM1 was found in your serum. Results should always be interpreted by a healthcare professional in the context of your symptoms and medical history.

Common Conditions Linked to This Test

GM1 ganglioside is associated with lysosomal storage disorders, such as GM1 gangliosidosis, which can affect multiple organ systems, including the brain and nervous system. It may also be studied in conditions involving abnormal lipid accumulation or inherited metabolic errors.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance: Understanding the Role of GM1 Ganglioside

Short name

GM1 Ganglioside Screening

Frequently asked questions

What does a positive result indicate?
A positive result suggests the presence of GM1 ganglioside in your serum, which may indicate a lysosomal storage disorder or another metabolic condition affecting lipid metabolism. This finding would warrant further evaluation by a specialist, such as a genetic counselor or metabolic disease expert, to determine the next steps.
How is this test different from other lipid-related tests?
Unlike standard lipid panels (e.g., cholesterol tests), this test specifically detects GM1 ganglioside using a line blot assay, which is a qualitative method to identify its presence rather than measuring concentration. It’s often used in specialized diagnostic contexts for rare genetic disorders.
Can lifestyle or diet affect this test?
Dietary factors typically do not influence qualitative tests like this one, as they assess the presence or absence of GM1 ganglioside rather than its concentration. However, if you’re undergoing further testing or treatment, follow your healthcare provider’s guidance regarding dietary restrictions or medications.
  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