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Ganglioside GM3 (Serum)

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

This test measures the amount of GM3, a type of ganglioside, in your serum. GM3 is a complex sugar molecule found in cell membranes, particularly in the nervous system.

Quick summary

["GM3 levels may help assess certain metabolic or genetic conditions affecting lipid metabolism."]

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

Key facts at a glance

LOINC
108201-5
Short code
GD3 Gangl IgG Ser Ql IA
Synonyms
GD3 Gangl IgG Ser Ql IA
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
ia
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 or a history suggestive of conditions like GM1 gangliosidosis, a rare inherited disorder affecting the nervous system and organs. It may also be used in research or specialized diagnostic contexts for lipid-related diseases.

What to Expect Before the Test

No special preparation is typically needed. You may be asked to fast for a few hours before the blood draw, but this depends on your provider’s instructions. Avoid smoking or consuming alcohol for a specified period before testing.

What the Test Involves

A blood sample will be taken from a vein in your arm. You may feel a brief pinch or sting, but it usually doesn’t cause significant discomfort. The process takes a few minutes, and you can resume normal activities afterward.

What the Results Mean

Results are interpreted by your healthcare provider based on your clinical picture, symptoms, and medical history. Elevated or abnormal levels may indicate underlying metabolic or genetic conditions, while normal results do not definitively rule out all possible causes.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance

Short name

GM3 Ganglioside Level

Frequently asked questions

What does a high or low GM3 level indicate?
High levels of GM3 in serum may be associated with certain lysosomal storage disorders or metabolic syndromes, though further testing and clinical correlation are required. Low levels are less commonly evaluated in isolation and may not have direct clinical significance unless part of a broader diagnostic workup.
Can diet or lifestyle affect GM3 levels?
Dietary factors or lifestyle choices like diet or exercise typically do not directly influence GM3 levels in serum. However, conditions affecting lipid metabolism (e.g., diabetes, obesity) may indirectly impact related metabolic pathways.
Is this test covered by insurance?
Coverage depends on your insurance plan and clinical indication. Check with your provider or insurance company to confirm if this test is approved for your specific situation. Some rare conditions may require prior authorization.
  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