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CAPN3 Gene Muscular dystrophy, limb-girdle type 2A NGS Genetic Test

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CAPN3 Gene Muscular dystrophy, limb-girdle type 2A NGS Genetic Test

Short Name: CAPN3 NGS LGMD2A Test

Also known as: Calpainopathy Genetic Test, CAPN3 Gene Mutation Analysis, LGMD2A Genetic Test

CAPN3 Gene Muscular dystrophy, limb-girdle type 2A NGS Genetic Test test available at DNA Labs India for ₹20,000. Uses Next Generation Sequencing (NGS), Targeted single-gene mutation analysis on Blood or Extracted DNA or One drop Blood on FTA Card samples. Results in Reports are released within 3 to 4 weeks from the date the sample is received at the laboratory.. Free home collection in 300+ cities across India.

Next Generation Sequencing (NGS) Single Gene Test🏠 Home Collection

🩺 Medically Reviewed By

Overview

The purpose of this NGS genetic test is to detect pathogenic or likely pathogenic variants in the CAPN3 gene, thereby confirming a clinical diagnosis of limb-girdle muscular dystrophy type 2A (calpainopathy) and providing the basis for genetic counselling, family planning, and management decisions.

Test Code
4354
ICD Code
G71.0
Price
₹20,000
Sample Type
Blood or Extracted DNA or One drop Blood on FTA Card
Result Time
Reports are released within 3 to 4 weeks from the date the sample is received at the laboratory.
Fasting Required
No
Method
Next Generation Sequencing (NGS), Targeted single-gene mutation analysis
Step 1

Sample Collection

No fasting is required. The treating physician may order a genetic counselling session to draw a three-generation family pedigree. The patient should bring previous clinical reports, creatine kinase levels, EMG/NCV findings, and muscle biopsy results if available.

Method: Peripheral venipuncture / FTA card blood spot

Step 2

Laboratory Analysis

A trained phlebotomist will collect the required blood sample in an EDTA tube. If an FTA card is used, one drop of blood will be applied to the card and allowed to air dry. If extracted DNA is being submitted, it must be in a sterile, labelled tube.

Step 3

Report Delivery

The sample is transported to the laboratory under appropriate conditions. No post-sampling restrictions are advised. The patient may resume normal activities immediately.

Timeline: Reports are released within 3 to 4 weeks from the date the sample is received at the laboratory.

Patient Instructions

1
Before the Test:No fasting required. Genetic counselling and clinical documentation are advised before sample collection.
2
During the Test:Sample collection is quick and minimally invasive.
3
After the Test:No restrictions. Reports will be available after 3-4 weeks on the online portal, by email, or via WhatsApp.

About This Test

Who Should Get This Test

The purpose of this NGS genetic test is to detect pathogenic or likely pathogenic variants in the CAPN3 gene, thereby confirming a clinical diagnosis of limb-girdle muscular dystrophy type 2A (calpainopathy) and providing the basis for genetic counselling, family planning, and management decisions.

How to Prepare

  • Ensure the patient's name, date of birth, and collection date are clearly written on the label.
  • Do not freeze whole blood samples.
  • FTA card blood spots must be completely air-dried and stored in a protective pouch.
  • If transport is delayed beyond 24 hours, maintain the EDTA blood sample at 2-8°C.
  • For extracted DNA, provide sample concentration and purity details if available.

Doctor's Notes

Reviewed by — MBBS, MD (Medical Genetics) · Reg. No. 8532

"Genetic counselling before testing is strongly recommended to document family history and confirm appropriate test selection."

Last medically reviewed: September 7, 2026

Test Parameters & Specifications

Sample TypeBlood or Extracted DNA or One drop Blood on FTA Card
Sample VolumeAs required by laboratory protocol
ContainerEDTA vacuum tube / FTA card / sterile vial for extracted DNA
Collection MethodPeripheral venipuncture / FTA card blood spot

Sample Stability

24-48 hours
Several months
Weeks to months
Sample Rejection Criteria:
  • Clotted blood sample
  • Haemolysed blood sample
  • Insufficient quantity of blood or DNA
  • Incorrectly labelled sample
  • Wet or inadequate FTA card blood spot

Understanding Your Results

The test report will be interpreted by a clinical geneticist in the context of the patient's clinical presentation. NGS analysis of the CAPN3 gene identifies sequence variants which are classified according to international guidelines.
📊

Pathogenic or likely pathogenic variant identified

Confirms the molecular diagnosis of limb-girdle muscular dystrophy type 2A in a symptomatic individual.

📊

No pathogenic variant identified

Reduces the likelihood of CAPN3-related LGMD2A, but does not exclude other muscular dystrophy genes.

📊

Variant of uncertain significance identified

Further family segregation analysis and additional genetic counselling are recommended.

⚠️ When to Consult a Doctor:

If the test identifies a pathogenic or likely pathogenic variant, schedule a follow-up with a clinical geneticist for genetic counselling. If a variant of uncertain significance is reported, consult the ordering physician and consider additional family studies. Continue regular follow-up with a neurologist for muscle weakness symptoms.

Limitations

  • This test is targeted to the CAPN3 gene and will not detect mutations in other genes causing limb-girdle muscular dystrophy.
  • Standard NGS may not reliably detect large exon-level deletions or duplications unless copy-number analysis is specifically included.
  • Some deep intronic variants or regulatory region variants may not be detected by targeted sequencing.
  • Variants of uncertain significance may require further family segregation analysis.
  • A negative result does not exclude all genetic causes of muscular dystrophy.

Risks & Considerations

  • Mild bruising or temporary discomfort at the blood collection site
  • Very low risk of infection
  • Potential psychological anxiety while waiting for genetic test results

Interfering Factors

  • Clotted or haemolysed blood sample
  • Inadequate quantity of extracted DNA
  • Microbial contamination during sample processing
  • Recent allogeneic bone marrow or stem cell transplant may lead to misleading results

Compare With Similar Tests

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Frequently Asked Questions

What is the CAPN3 gene?
The CAPN3 gene provides instructions for making calpain-3, an enzyme mainly active in skeletal muscle. Mutations in this gene cause limb-girdle muscular dystrophy type 2A.
What is limb-girdle muscular dystrophy type 2A?
LGMD2A, also known as calpainopathy, is an autosomal recessive muscle disorder characterized by progressive weakness and wasting of shoulder and pelvic girdle muscles.
How is the CAPN3 NGS genetic test performed?
The test uses next-generation sequencing to read the protein-coding regions and splice sites of the CAPN3 gene. DNA is analysed from a blood sample, extracted DNA, or FTA card blood spot.
Does this test require fasting?
No, fasting is not required for the CAPN3 gene NGS genetic test. You can eat and drink normally before sample collection.
What is the cost of the test?
The test costs INR 20,000 at DNA Labs India. The price includes free home sample collection in selected cities.
How long will the reports take?
Reports are usually issued within 3 to 4 weeks after the laboratory receives the sample.
Which samples are accepted?
The accepted samples are venous blood in an EDTA tube, extracted DNA, or one drop of blood applied on an FTA card.
Can a positive result confirm LGMD2A?
Yes, identification of a pathogenic or likely pathogenic variant in CAPN3 from an affected individual confirms the molecular diagnosis of LGMD2A.
Can a negative result rule out LGMD2A?
A negative result in a single-gene CAPN3 NGS test reduces the likelihood of LGMD2A, but it cannot exclude all possible genetic causes of limb-girdle muscular dystrophy.
What does a variant of uncertain significance mean?
A VUS is a genetic change whose impact on health is not yet known. Additional family testing and functional studies may be required to clarify its significance.
Do I need genetic counselling?
Genetic counselling is strongly recommended before and after the test to discuss family history, the significance of results, and recurrence risk.
Is the CAPN3 NGS test covered by insurance?
Coverage depends on the patient's insurance policy. DNA Labs India does not guarantee insurance coverage, and patients should check with their insurance provider before testing.
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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