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GRIN2D Gene Early infantile epileptic encephalopathy type 46 NGS Genetic Test

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GRIN2D Gene Early infantile epileptic encephalopathy type 46 NGS Genetic Test

Short Name: GRIN2D EIEE46 NGS Test

Also known as: EIEE46, GRIN2D Encephalopathy, GRIN2D-Related Epileptic Encephalopathy

GRIN2D Gene Early infantile epileptic encephalopathy type 46 NGS Genetic Test test available at DNA Labs India for ₹20,000. Uses Next Generation Sequencing (NGS) on Blood or Extracted DNA or One drop Blood on FTA Card samples. Results in Reports are typically available within 3 to 4 weeks from sample receipt.. Free home collection in 300+ cities across India.

NGS Genetic TestPediatric🏠 Home Collection

🩺 Medically Reviewed By

Overview

The purpose of this test is to identify pathogenic variants in the GRIN2D gene that cause Early Infantile Epileptic Encephalopathy Type 46. It is used to confirm a clinical diagnosis, guide treatment decisions, and provide information for genetic counseling and recurrence-risk assessment.

Test Code
4033
Price
₹20,000
Sample Type
Blood or Extracted DNA or One drop Blood on FTA Card
Result Time
Reports are typically available within 3 to 4 weeks from sample receipt.
Fasting Required
No
Method
Next Generation Sequencing (NGS)
Step 1

Sample Collection

A pre-test genetic counseling session is required to draw a pedigree chart of family members affected with the disease. No fasting is required.

Method: Venipuncture or heel prick, or FTA card spot

Step 2

Laboratory Analysis

A blood sample is drawn from a vein in the arm. Alternatively, a few drops of blood may be collected on an FTA card.

Step 3

Report Delivery

No specific post-collection restrictions. The sample is sent to the laboratory for processing.

Timeline: Reports are typically available within 3 to 4 weeks from sample receipt.

Patient Instructions

1
Before the Test:A pre-test genetic counseling session is required to draw a pedigree chart of family members affected with the disease. No fasting is required.
2
During the Test:A blood sample is drawn from a vein in the arm. Alternatively, a few drops of blood may be collected on an FTA card.
3
After the Test:No specific post-test restrictions. The sample is sent to the laboratory for processing.

About This Test

Who Should Get This Test

The purpose of this test is to identify pathogenic variants in the GRIN2D gene that cause Early Infantile Epileptic Encephalopathy Type 46. It is used to confirm a clinical diagnosis, guide treatment decisions, and provide information for genetic counseling and recurrence-risk assessment.

How to Prepare

  • Provide a valid ID and relevant clinical records
  • Informed consent may be required for genetic testing
  • Family history / pedigree chart is needed for genetic counseling

Doctor's Notes

Reviewed by — MBBS, MD (General Medicine) · Reg. No. 8052

"Early diagnosis via genetic testing can significantly improve seizure management and allow tailored treatment in EIEE46. NGS-based analysis is a reliable method to detect GRIN2D mutations."

Last medically reviewed: September 7, 2026

Test Parameters & Specifications

Sample TypeBlood or Extracted DNA or One drop Blood on FTA Card
ContainerEDTA tube / FTA card
Collection MethodVenipuncture or heel prick, or FTA card spot
Sample Rejection Criteria:
  • Hemolyzed blood samples
  • Insufficient sample quantity
  • Improperly labeled samples
  • Condensation or moisture on FTA card

Understanding Your Results

The GRIN2D NGS Genetic Test is performed to detect pathogenic variants in the GRIN2D gene associated with Early Infantile Epileptic Encephalopathy Type 46.
📊

Positive / Pathogenic variant detected

A pathogenic variant was found in the GRIN2D gene, confirming the diagnosis of EIEE46. Genetic counseling is recommended.

📊

Negative / No pathogenic variant detected

No clinically significant variant was found. The clinical diagnosis may need to be reconsidered.

📊

Variant of Uncertain Significance (VUS)

A variant was found but its clinical significance is unknown. Additional testing or familial segregation analysis may be needed.

⚠️ When to Consult a Doctor:

Consult a pediatric neurologist if your child has recurrent seizures, developmental delay, abnormal muscle movements, feeding or swallowing issues, or abnormal EEG findings.

Limitations

  • This NGS test detects single nucleotide variants and small insertions/deletions in the GRIN2D gene
  • Large gene rearrangements and deep intronic mutations may not be detected by this test
  • Results should be interpreted by a qualified clinical geneticist in the context of clinical findings

Risks & Considerations

  • Minor bruising at blood draw site
  • Slight bleeding or dizziness
  • No major side effects are associated with this test

Interfering Factors

  • Poor DNA quality or low DNA concentration may interfere with NGS analysis
  • Contamination of sample can lead to inaccurate results
  • Incorrect sample labeling or transportation may compromise the test

Frequently Asked Questions

What is Early Infantile Epileptic Encephalopathy Type 46?
EIEE46 is a rare genetic disorder that affects the brain, causing seizures beginning in the first few months of life, along with developmental delay and other neurological issues. It is caused by mutations in the GRIN2D gene.
What is the role of the GRIN2D gene?
The GRIN2D gene provides instructions for making a protein subunit of the NMDA receptor, which helps in communication between nerve cells in the brain.
What symptoms are seen in EIEE46?
Symptoms include recurrent seizures, delayed development, intellectual disability, abnormal muscle tone, feeding/swallowing difficulties, and abnormal EEG.
How is the GRIN2D NGS genetic test performed?
The test uses next-generation sequencing (NGS) to analyse the GRIN2D gene for pathogenic mutations. It requires a blood or saliva sample that is processed in a laboratory.
What is the cost of the GRIN2D NGS genetic test at DNA Labs India?
The cost is INR 20000. This includes the genetic test, counseling session, and clinical report.
What sample type is required for the test?
Blood or extracted DNA or one drop of blood on an FTA card.
How long does it take to receive the reports?
Reports are generally delivered in 3 to 4 weeks.
Is genetic counseling part of the test?
Yes, a pre-test genetic counseling session is required to draw a pedigree chart and understand family history.
Is home sample collection available?
Yes, DNA Labs India offers free home sample collection for online bookings in many cities across India.
Can this test detect all types of GRIN2D mutations?
NGS can detect single nucleotide variants and small insertions/deletions. It may not detect large gene rearrangements or deep intronic mutations.
Who should consider taking this genetic test?
Children with symptoms of EIEE46 such as uncontrolled seizures in infancy, developmental delay, or abnormal EEG findings, as well as families with a history of EIEE46.
Are there any risks associated with the test?
The test requires a blood draw or heel prick, which may carry minor discomfort or bruising at the collection site. There are no other significant risks.
Worried about the process? Our certified phlebotomists collect thousands of samples every month across India. The process takes under 5 minutes and is virtually painless. Questions? Message us on WhatsApp — we're here 7 days a week.

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