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KCNH2 Gene Short QT syndrome type 1 NGS Genetic Test

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KCNH2 Gene Short QT syndrome type 1 NGS Genetic Test

Short Name: KCNH2 SQTS Type 1 NGS Test

Also known as: SQTS Type 1 Genetic Test, KCNH2 Mutation Analysis, Short QT Syndrome Genetic Test

KCNH2 Gene Short QT syndrome type 1 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. Free home collection in 300+ cities across India.

NGS Genetic Test🏠 Home Collection

🩺 Medically Reviewed By

Overview

The purpose of this test is to diagnose Short QT Syndrome Type 1 by identifying mutations in the KCNH2 gene, enabling early intervention, risk assessment, and family screening to prevent sudden cardiac death.

Test Code
5284
Price
₹20,000
Sample Type
Blood or Extracted DNA or One drop Blood on FTA Card
Result Time
3 to 4 Weeks
Fasting Required
No
Method
Next-Generation Sequencing (NGS)
Step 1

Sample Collection

Clinical history of the patient and a genetic counseling session to draw a pedigree chart of family members affected with Short QT Syndrome.

Method: Venipuncture or finger-prick

Step 2

Laboratory Analysis

Standard blood collection procedure; no special requirements.

Step 3

Report Delivery

Sample is processed in the lab for DNA extraction and NGS analysis.

Timeline: 3 to 4 Weeks

Patient Instructions

1
Before the Test:Genetic counseling and clinical history review are recommended before testing.
2
During the Test:Blood sample collection; no pain or minimal discomfort.
3
After the Test:Results are analyzed and reported; follow-up counseling is advised.

About This Test

Who Should Get This Test

The purpose of this test is to diagnose Short QT Syndrome Type 1 by identifying mutations in the KCNH2 gene, enabling early intervention, risk assessment, and family screening to prevent sudden cardiac death.

How to Prepare

  • Use sterile techniques for blood collection
  • Label samples correctly with patient details
  • Store samples at appropriate temperature until transport

Doctor's Notes

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

"Genetic testing for KCNH2 mutations is essential for early diagnosis and management of Short QT Syndrome, helping to prevent sudden cardiac events through personalized treatment plans."

Last medically reviewed: September 7, 2026

Test Parameters & Specifications

Sample TypeBlood or Extracted DNA or One drop Blood on FTA Card
Sample Volume5 mL blood or equivalent
ContainerEDTA tube or FTA card
Collection MethodVenipuncture or finger-prick

Sample Stability

Blood samples: stable for 48 hours at room temperature
Extracted DNA: stable for years if stored properly
Sample Rejection Criteria:
  • Hemolyzed or clotted samples
  • Incorrectly labeled or insufficient sample volume
  • Samples without proper consent or documentation

Understanding Your Results

Results indicate the presence or absence of pathogenic mutations in the KCNH2 gene. Positive results confirm genetic predisposition to Short QT Syndrome, while negative results may require further clinical evaluation.
📊

Pathogenic variant detected

Confirms diagnosis of Short QT Syndrome Type 1; risk of cardiac events increased; family screening recommended.

📊

No pathogenic variant detected

No mutation found in KCNH2 gene; does not rule out other genetic or non-genetic causes; clinical correlation advised.

📊

Variant of uncertain significance (VUS)

Genetic variant identified but clinical significance unknown; requires further research and monitoring.

⚠️ When to Consult a Doctor:

Consult a cardiologist or genetic specialist if you experience symptoms like palpitations, fainting, or have a family history of sudden cardiac death, regardless of test results.

Limitations

  • May not detect all genetic variants or mutations in non-coding regions
  • Results require interpretation by a genetic specialist
  • Does not rule out other causes of cardiac symptoms

Risks & Considerations

  • Minimal physical risks from blood draw (e.g., bruising, infection)
  • Psychological impact of genetic results (e.g., anxiety, stress)
  • Potential for incidental findings unrelated to Short QT Syndrome

Interfering Factors

  • Poor sample quality or insufficient DNA
  • Contamination during sample collection or processing
  • Technical limitations of NGS technology

Frequently Asked Questions

What is Short QT Syndrome?
Short QT Syndrome is a rare genetic heart disorder characterized by a shortened QT interval on an ECG, increasing the risk of abnormal heart rhythms and sudden cardiac death.
What is the KCNH2 gene?
The KCNH2 gene codes for the hERG potassium channel in the heart, which regulates electrical activity. Mutations can lead to Short QT Syndrome.
How is the KCNH2 Gene Short QT Syndrome test performed?
The test uses Next-Generation Sequencing (NGS) to analyze DNA from a blood sample for mutations in the KCNH2 gene.
What are the symptoms of Short QT Syndrome?
Symptoms may include palpitations, fainting, near-fainting episodes, or sudden cardiac arrest, though some individuals may be asymptomatic.
Who should consider this genetic test?
Individuals with a family history of Short QT Syndrome, unexplained cardiac symptoms, or abnormal ECG findings should consider testing.
What does a positive test result mean?
A positive result indicates a pathogenic mutation in the KCNH2 gene, confirming genetic predisposition to Short QT Syndrome and requiring medical management.
What is the cost of the KCNH2 Gene Short QT Syndrome test?
The test costs INR 20000 at DNA Labs India, with home sample collection available across India.
Is home sample collection available for this test?
Yes, DNA Labs India offers free home sample collection for online bookings in numerous cities across India.
How long does it take to get the test results?
Results are typically available within 3 to 4 weeks after sample collection.
Is genetic counseling provided with the test?
Yes, a genetic counseling session is included to help interpret results and understand implications for the patient and family.
What are the risks of undergoing this genetic test?
Risks are minimal, including slight discomfort from blood draw and potential psychological impact from results; genetic counseling mitigates these risks.
How accurate is NGS genetic testing for Short QT Syndrome?
NGS is highly accurate for detecting mutations in the KCNH2 gene, but results should be interpreted by a genetic specialist in clinical context.
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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Stored in India: All patient records are stored on servers located in India. No data is transferred outside the country.

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