Gene CMT4J NGS Genetic Test
Short Name: CMT4J NGS Test
Also known as: CMT4J Genetic Test, FIG4 Gene Genetic Test, FIG4 NGS Analysis
Gene CMT4J 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 3 to 4 weeks after the sample is received at the laboratory.. Free home collection in 300+ cities across India.
🩺 Medically Reviewed By
Dr SULOCHANA HEMCHANDRA HOLLA
Consultant Medical Geneticist · Reg: 8532
Last reviewed: September 7, 2026
Overview
The purpose of this test is to identify pathogenic or likely pathogenic variants in the FIG4 gene using next-generation sequencing, to confirm or exclude CMT4J in symptomatic individuals and to enable reproductive and family counselling.
- Test Code
- 3977
- CPT Code
- N/A
- ICD Code
- G60.0
- Price
- ₹20,000
- Sample Type
- Blood or Extracted DNA or One drop Blood on FTA Card
- Result Time
- 3 to 4 weeks after the sample is received at the laboratory.
- Fasting Required
- No
- Method
- Next-Generation Sequencing (NGS)
Sample Collection
No fasting is needed. A genetic counselling session is required to review family history and draw a pedigree chart. Please carry all relevant medical records and referral letters.
Method: Blood draw / DNA submission / FTA card sample
Laboratory Analysis
The sample is collected by a trained professional. If using FTA card, one drop of blood is applied. No anesthesia is required.
Report Delivery
No restrictions. The sample will be transported to the laboratory; results are expected in 3 to 4 weeks.
Timeline: 3 to 4 weeks after the sample is received at the laboratory.
Patient Instructions
About This Test
Who Should Get This Test
The purpose of this test is to identify pathogenic or likely pathogenic variants in the FIG4 gene using next-generation sequencing, to confirm or exclude CMT4J in symptomatic individuals and to enable reproductive and family counselling.
How to Prepare
- No fasting is required.
- A genetic counselling session will be arranged before sampling.
- Please carry your clinical history and previous investigation reports.
- The sample can be blood, extracted DNA, or one drop of blood on FTA card.
Doctor's Notes
Reviewed by Dr SULOCHANA HEMCHANDRA HOLLA — MBBS, MD (Medical Genetics) · Reg. No. 8532
"Inherited neuropathies require careful clinical phenotyping; genetic confirmation in the proband is the first step for counselling the family."
Last medically reviewed: September 7, 2026
Test Parameters & Specifications
Sample Stability
- Hemolyzed or clotted blood sample
- Missing label or requisition form
- Insufficient sample volume or DNA quantity
- Inappropriate transport temperature
Understanding Your Results
No evidence of a FIG4-related CMT4J variant identified in this individual.
Genetic finding consistent with CMT4J if segregation and clinical presentation support the diagnosis.
The clinical significance is unknown. Family studies and further evaluation are needed.
If you or a family member has progressive distal weakness, foot drop, hand atrophy, numbness, or a known family history of CMT4J, consult a neurologist or clinical geneticist for evaluation and pre-test counselling.
Limitations
- ⚠Only the FIG4 gene is analysed; variants in other CMT-related genes may not be detected.
- ⚠Large deletions, duplications or deep intronic variants may not be covered by this NGS test.
- ⚠A negative result does not completely exclude the possibility of CMT4J caused by variants not detected by this method.
- ⚠Genetic variants of uncertain significance may be reported and require further evaluation.
Risks & Considerations
- ●Minimal discomfort during blood collection
- ●Small risk of bruising or bleeding at venipuncture site
- ●No serious genetic testing risks
Interfering Factors
- ●Poor DNA quality or quantity
- ●Contamination of sample with another person's DNA
- ●Variant outside the region being analysed
- ●Clinical misclassification or incomplete family history
Compare With Similar Tests
| Test | Gene CMT4J NGS Genetic Test | CMT NGS Panel | FIG4 Sanger Sequencing |
|---|---|---|---|
| Comparison | Gene CMT4J NGS Genetic Test |
Frequently Asked Questions
What is the cost of the FIG4 Gene CMT4J NGS Genetic Test?
What sample type is needed for this test?
Do I need to fast before the CMT4J genetic test?
How long does it take to get results?
What is CMT4J?
Who should take this test?
How is the test performed?
What does a negative result mean?
What does a positive result mean?
Will I need genetic counselling?
Is home sample collection available?
Can this test be used for family planning?
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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.
Your Data Privacy
Your medical data is protected under Indian law.
✓ Stored in India: All patient records are stored on servers located in India. No data is transferred outside the country.
✓ DPDP Act Compliant: Under the Digital Personal Data Protection Act 2023, you can request deletion of your records at any time by contacting support.
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