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Sulfatide IgG Detection by Line Blot (Qualitative)

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

This test checks for antibodies against sulfatide, a rare brain lipid, which may be linked to certain neurological conditions. It uses a line blot method to detect IgG antibodies in your blood.

Quick summary

["This test helps identify potential immune responses to sulfatide, which could be associated with rare neurological disorders."]

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

Key facts at a glance

LOINC
89500-3
Short code
Sulfatide IgG Ser Ql Line blot
Synonyms
Sulfatide IgG 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

What This Test Measures

The test detects the presence of IgG antibodies specific to sulfatide, a glycolipid found in the brain and nervous system. Sulfatide is involved in cell signaling and myelin production, and its breakdown products may trigger an immune response in some conditions.

How the Test Works

A small blood sample is drawn and analyzed using a line blot immunoassay. This method allows for the visualization of sulfatide-specific IgG antibodies on a membrane, helping determine if they are present at detectable levels.

Why It Might Be Ordered

Your healthcare provider may recommend this test if you have symptoms suggestive of a rare neurological disorder, such as progressive neurological decline, movement disorders, or other unexplained neurological symptoms. It is often used in research or specialized clinical settings to investigate conditions like Canavan disease or other lysosomal storage disorders.

What to Expect Before the Test

No special preparation is needed for this test. You may have a small needle inserted into your arm to draw a blood sample, similar to other routine blood tests. If you are on blood-thinning medication, inform your healthcare provider beforehand.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance

Short name

IgG Sulfatide Antibody Screening

Frequently asked questions

What does a positive or negative result mean?
A positive result indicates the presence of sulfatide-specific IgG antibodies, which may suggest an immune response to sulfatide. This finding could be associated with certain neurological conditions, though further testing and clinical correlation are needed to determine the exact significance. A negative result means no detectable sulfatide-specific antibodies were found in your sample.
How often should I get this test?
This test is typically not a routine screening test. It is usually ordered based on specific clinical concerns or research purposes. Follow your healthcare provider’s recommendations for follow-up testing and monitoring.
Are there any risks or side effects from this test?
The most common risk from this blood draw is a mild bruise, soreness, or slight swelling at the injection site. Rarely, there may be a reaction to the needle or blood draw process, such as fainting or dizziness. If you experience any unusual symptoms, contact your healthcare provider immediately.
  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