VGKC (Voltage Gated Potassium Channel) Antibody Serum Test
Short Name: VGKC Antibody Test
Also known as: VGKC Ab Test, Voltage Gated Potassium Channel Antibody Test, LGI1/CASPR2 Antibody Test
VGKC (Voltage Gated Potassium Channel) Antibody Serum Test test available at DNA Labs India for ₹10,000. Uses Cell-Based Assay, Immunofluorescence on Serum samples. Results in Reports are delivered on the same day after sample submission. You will receive the report via online portal, email, or WhatsApp.. Free home collection in 300+ cities across India.
Overview
The primary purpose of the VGKC antibody serum test is to help diagnose autoimmune disorders of the central and peripheral nervous system that are associated with antibodies against voltage-gated potassium channels. It measures levels of LGI1 and CASPR2 antibodies using cell-based assay and immunofluorescence techniques. Detection of these antibodies supports the diagnosis of acquired neuromyotonia, limbic encephalitis, Morvan syndrome, and related autoimmune neurological conditions, guiding appropriate immunotherapy and clinical management.
- Test Code
- 3730
- Price
- ₹10,000
- Sample Type
- Serum
- Result Time
- Reports are delivered on the same day after sample submission. You will receive the report via online portal, email, or WhatsApp.
- Fasting Required
- Yes (8 hours)
- Method
- Cell-Based Assay, Immunofluorescence
Sample Collection
Overnight fasting is preferred. Inform your doctor about all medications, supplements, and any ongoing treatments before the sample collection.
Method: Venipuncture
Laboratory Analysis
A blood sample will be collected from a vein in your arm. The procedure takes only a few minutes and causes minimal discomfort.
Report Delivery
You may resume normal activities and diet immediately after the blood sample is collected. No special precautions are required.
Timeline: Reports are delivered on the same day after sample submission. You will receive the report via online portal, email, or WhatsApp.
Patient Instructions
About This Test
Who Should Get This Test
The primary purpose of the VGKC antibody serum test is to help diagnose autoimmune disorders of the central and peripheral nervous system that are associated with antibodies against voltage-gated potassium channels. It measures levels of LGI1 and CASPR2 antibodies using cell-based assay and immunofluorescence techniques. Detection of these antibodies supports the diagnosis of acquired neuromyotonia, limbic encephalitis, Morvan syndrome, and related autoimmune neurological conditions, guiding appropriate immunotherapy and clinical management.
How to Prepare
- Overnight fasting is preferred.
- Collect 2 mL (1 mL min.) serum in an SST (Serum Separator Tube).
- Ship the sample refrigerated or frozen.
- Ensure sample is labeled correctly and no hemolysis occurs.
Doctor's Notes
"Early detection of VGKC antibodies is crucial for managing autoimmune encephalitis. This test helps guide timely immunotherapy and improve patient outcomes."
Test Parameters & Specifications
Sample Stability
- Hemolyzed or grossly lipemic samples
- Sample received without proper labeling
- Sample exceeding the stability timeline
Understanding Your Results
Positive
Detection of LGI1 or CASPR2 antibodies suggests an autoimmune neurological disorder such as limbic encephalitis or neuromyotonia.
Negative
No antibodies detected. Autoimmune VGKC-mediated disease is less likely, but clinical correlation is advised.
Equivocal
Borderline result. Consider repeat testing or additional autoimmune encephalitis panel.
Consult a neurologist immediately if you experience persistent memory loss, unexplained seizures, muscle stiffness or weakness, tremors, or difficulty speaking. Early evaluation and diagnosis are crucial for managing autoimmune neurological conditions.
Limitations
- ⚠A negative result does not entirely exclude autoimmune neurological disease
- ⚠Positive antibodies may rarely occur in non-autoimmune conditions
- ⚠Results must be interpreted in conjunction with clinical presentation and other investigations such as MRI and EEG
Risks & Considerations
- ●Minor bruising at the puncture site
- ●Bleeding or infection at the needle site (rare)
- ●Dizziness or lightheadedness during blood draw
Interfering Factors
- ●Recent or ongoing immunosuppressive therapy may reduce antibody levels
- ●Hemolyzed or lipemic samples may interfere with assay accuracy
- ●Sample contamination or improper storage
- ●Recent blood transfusion
Frequently Asked Questions
What is the VGKC antibody serum test?
Why is this test ordered?
Is fasting required for the VGKC antibody test?
How is the VGKC antibody test performed?
How long does it take to get the test results?
What does a positive VGKC antibody result mean?
What is the cost of the VGKC antibody serum test in India?
Are there any risks associated with this test?
Can I get a home sample collection for this test?
Which conditions are associated with VGKC antibodies?
What is the difference between LGI1 and CASPR2 antibodies?
Should I stop taking my medications before the test?
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We serve as a reference laboratory for hospitals and clinics across India. Send samples from your facility with same-day pickup, priority processing, and results delivered through our online portal. Competitive institutional pricing available.
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