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RYR1 Gene King-Denborough syndrome NGS Genetic Test

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RYR1 Gene King-Denborough syndrome NGS Genetic Test

Short Name: RYR1 NGS Genetic Test

Also known as: RYR1 Gene NGS Genetic Test

RYR1 Gene King-Denborough syndrome 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 delivered within 3 to 4 weeks from the date the sample is received at the laboratory.. Free home collection in 300+ cities across India.

NGS Genetic Test🏠 Home Collection

🩺 Medically Reviewed By

Overview

The purpose of this test is to detect disease-causing mutations in the RYR1 gene associated with King-Denborough Syndrome. NGS technology allows parallel sequencing of the entire coding region, ensuring high diagnostic yield. The test helps confirm clinical suspicion, guides management, and enables family screening.

Test Code
4158
Price
₹20,000
Sample Type
Blood or Extracted DNA or one drop Blood on FTA Card
Result Time
Reports are delivered within 3 to 4 weeks from the date the sample is received at the laboratory.
Fasting Required
No
Method
Next Generation Sequencing (NGS)
Step 1

Sample Collection

No fasting required. Patient should share their clinical history and family pedigree with the genetic counsellor prior to sample collection. For online bookings, a free home sample collection is arranged at your convenience.

Method: Blood draw or cheek swab

Step 2

Laboratory Analysis

A blood sample will be drawn from a vein in your arm, or one drop of blood may be collected on an FTA card. For cheek swab, a sterile swab is rubbed on the inside of the cheek.

Step 3

Report Delivery

No special precautions after collection. You may resume normal activities. The sample is securely transported to the laboratory for analysis.

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

Patient Instructions

1
Before the Test:No fasting required. A genetic counselling session to draw a pedigree chart of family members affected with RYR1 gene-related conditions is recommended before the test.
2
During the Test:The sample collection procedure is quick and involves either a simple blood draw, one drop of blood on an FTA card, or a cheek swab.
3
After the Test:You can resume normal activities immediately. The laboratory will process your sample and release a detailed report within 3-4 weeks.

About This Test

Who Should Get This Test

The purpose of this test is to detect disease-causing mutations in the RYR1 gene associated with King-Denborough Syndrome. NGS technology allows parallel sequencing of the entire coding region, ensuring high diagnostic yield. The test helps confirm clinical suspicion, guides management, and enables family screening.

How to Prepare

  • Please provide a valid government-issued ID and prescription if available.
  • No fasting is required.
  • Ensure the sample collection is scheduled at your convenience via home collection or walk-in.
  • Genetic counselling session to draw a pedigree chart is part of the pre-test process.

Doctor's Notes

Reviewed by — MBBS, MD (Pathology) · Reg. No. 21521

Last medically reviewed: September 7, 2026

Test Parameters & Specifications

Sample TypeBlood or Extracted DNA or one drop Blood on FTA Card
Collection MethodBlood draw or cheek swab
Sample Rejection Criteria:
  • Hemolyzed blood sample
  • Inadequate sample volume
  • Improper storage or transport
  • Missing clinical information

Understanding Your Results

The result of this NGS test will be reported as 'Positive' when a pathogenic or likely pathogenic variant in the RYR1 gene is identified, 'Negative' when no disease-causing variant is detected, and 'VUS' when a variant of uncertain significance is found. The interpretation should be correlated with clinical findings and family history.
📊

Positive

Pathogenic variant identified; confirms diagnosis of King-Denborough Syndrome.

📊

Negative

No pathogenic variant found; clinical diagnosis is not excluded.

📊

Variant of Uncertain Significance (VUS)

Variant found; further family testing and investigations are required.

⚠️ When to Consult a Doctor:

If you or your child experiences any symptoms such as muscle weakness, breathing difficulty, or developmental delays, consult a neurologist or clinical geneticist for a comprehensive evaluation. Additionally, if a family member has been diagnosed with an RYR1-related disorder, genetic counselling is advised.

Limitations

  • This test analyzes only the RYR1 gene and does not rule out variants in other genes causing similar phenotypes.
  • Results may include Variants of Uncertain Significance (VUS) which require further investigation.
  • Negative results do not completely exclude King-Denborough Syndrome, especially if clinical suspicion is strong.

Risks & Considerations

  • The blood draw may cause minor pain, bruising, or infection at the puncture site. These are rare and generally minimal.

Interfering Factors

  • Inadequate DNA quality
  • Sample contamination
  • Incorrect sample labeling
  • NGS artifacts

Frequently Asked Questions

What is the cost of the RYR1 Gene King-Denborough Syndrome NGS Genetic Test?
The test costs INR 20000 at DNA Labs India. This is a discounted price for online bookings.
What is King-Denborough Syndrome?
King-Denborough Syndrome is a rare genetic disorder that affects the muscles and the nervous system, caused by mutations in the RYR1 gene.
What are the symptoms of King-Denborough Syndrome?
Common symptoms include facial muscle weakness, difficulty swallowing, breathing difficulties, abnormal curvature of the spine, joint stiffness and contractures, delayed motor development, and intellectual disability.
How is the test performed?
The test uses Next Generation Sequencing (NGS) technology to analyze the RYR1 gene for mutations. A sample of blood, extracted DNA, or one drop of blood on an FTA card is required.
What sample is required for the RYR1 gene NGS test?
The sample can be blood, extracted DNA, or one drop of blood on an FTA card. A cheek swab may also be used.
Is fasting required before the test?
No, fasting is not required for this genetic test.
How long does it take to get the test report?
The test report is typically available within 3 to 4 weeks after the sample reaches the laboratory.
How will I receive my test report?
The report is delivered through online portal, email, or WhatsApp as per your preference.
What is the purpose of the RYR1 gene NGS test?
The test identifies genetic mutations in the RYR1 gene responsible for causing King-Denborough Syndrome, thus confirming the diagnosis and guiding management.
Is genetic counselling required before the test?
Yes, a genetic counselling session to draw a pedigree chart of family members affected with RYR1 gene-related conditions is recommended as part of the pre-test process.
Does DNA Labs India provide raw data with the report?
Yes, DNA Labs India is the only lab that shares Raw Data, FASTQ, and VCF files along with the conclusive clinical report.
Who should consider undergoing this genetic test?
Individuals with symptoms suggestive of King-Denborough Syndrome, those with a family history of RYR1 mutations, or couples planning families after an affected diagnosis may consider this test.
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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