Skip to main content
DNA Labs India

ADAM9 Gene Cone-Rod Dystrophy Type 9 NGS Genetic Test

DNA Labs India | ISO 9001:2015 Certified

ADAM9 Gene Cone-Rod Dystrophy Type 9 NGS Genetic Test

Short Name: ADAM9 CRD9 NGS Test

Also known as: Cone-Rod Dystrophy 9 Gene Test, ADAM9 Gene Mutation Analysis, ADAM9-related Inherited Retinal Disorder NGS Test

ADAM9 Gene Cone-Rod Dystrophy Type 9 NGS Genetic Test test available at DNA Labs India for ₹20,000. Uses Next-Generation Sequencing (NGS) on Blood samples. Results in Reports will be delivered in 3 to 4 weeks after the sample reaches the laboratory.. Free home collection in 300+ cities across India.

NGS Genetic TestChildren, Adolescents, Adults🏠 Home Collection

✍️ Written By

🩺 Medically Reviewed By

Dr SULOCHANA HEMCHANDRA HOLLA

Dr SULOCHANA HEMCHANDRA HOLLA

Consultant Medical Geneticist · Reg: 8532

Last reviewed: September 7, 2026

Overview

To confirm a suspected diagnosis of cone-rod dystrophy type 9 by identifying pathogenic variants in the ADAM9 gene using NGS technology. The test also supports genetic counselling, family screening, and informed clinical management of affected individuals.

Test Code
3817
CPT Code
NA
ICD Code
H35.54
Price
₹20,000
Sample Type
Blood
Result Time
Reports will be delivered in 3 to 4 weeks after the sample reaches the laboratory.
Fasting Required
No
Method
Next-Generation Sequencing (NGS)
Step 1

Sample Collection

No fasting is required. Please carry any previous eye examination reports, clinical summary, and relevant family history. A genetic counselling session is recommended before testing to draw a pedigree chart and discuss the implications of the result.

Method: Venipuncture

Step 2

Laboratory Analysis

A trained phlebotomist will collect a small blood sample from a vein in the arm. The procedure is quick and routine.

Step 3

Report Delivery

You can resume normal activities immediately after blood collection. The sample will be transported to the laboratory for NGS analysis.

Timeline: Reports will be delivered in 3 to 4 weeks after the sample reaches the laboratory.

Patient Instructions

1
Before the Test:No special preparation is needed. Clinical history, family history, and ophthalmology records should be shared with the laboratory. Genetic counselling is recommended before the test.
2
During the Test:The test requires a routine blood draw. This is done by venipuncture and takes only a few minutes.
3
After the Test:You can leave immediately after the blood draw. The sample is processed in the laboratory and results are typically available in 3 to 4 weeks.

About This Test

Who Should Get This Test

To confirm a suspected diagnosis of cone-rod dystrophy type 9 by identifying pathogenic variants in the ADAM9 gene using NGS technology. The test also supports genetic counselling, family screening, and informed clinical management of affected individuals.

How to Prepare

  • No fasting is required
  • Please carry a valid doctor's referral and clinical summary
  • Home sample collection is available; a trained phlebotomist will visit
  • Genetic counseling and pedigree analysis are recommended before testing

Doctor's Notes

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

"Inherited retinal diseases require correlation between clinical findings, family history, and genetic results. Prompt referral to a clinical geneticist helps confirm the diagnosis and guide family counselling."

Last medically reviewed: September 7, 2026

Test Parameters & Specifications

Sample TypeBlood
Sample VolumeNot specified
ContainerEDTA blood collection tube
Collection MethodVenipuncture

Sample Stability

Blood samples should be transported to the laboratory as soon as possible after collection
Extracted DNA is stable when stored under appropriate laboratory conditions
Sample Rejection Criteria:
  • Incorrectly labelled sample
  • Clotted or haemolysed blood sample
  • Sample received without the required requisition form or clinical history

Understanding Your Results

This NGS test is intended for diagnostic confirmation in symptomatic individuals. A negative result does not exclude cone-rod dystrophy caused by variants in other genes.
📊

No pathogenic variant detected in ADAM9

No evidence of ADAM9-related cone-rod dystrophy type 9. Evaluation of other inherited retinal disease genes may be considered.

📊

Pathogenic or likely pathogenic variant detected in ADAM9

Confirms the genetic diagnosis of cone-rod dystrophy type 9 in the appropriate clinical context. Genetic counselling and family screening are recommended.

📊

Variant of uncertain significance detected in ADAM9

Clinical significance is not yet clear. Further family studies and clinical correlation are needed before making a definitive diagnosis.

⚠️ When to Consult a Doctor:

Seek prompt ophthalmological evaluation if you or your child have reduced central vision, difficulty recognising faces, photophobia, colour vision problems, or night blindness. A clinical geneticist can then help decide whether genetic testing is appropriate and guide interpretation of the result.

Limitations

  • ⚠This targeted test analyzes only the ADAM9 gene; variants in other genes causing similar inherited retinal dystrophies will not be detected
  • ⚠The test may not identify large chromosomal rearrangements or deep intronic variants depending on the NGS assay design
  • ⚠Results must be interpreted by a clinical geneticist in the context of clinical symptoms, retinal examination, and family history

Risks & Considerations

  • ●Minimal pain or bruising at the blood draw site
  • ●Mild dizziness or light-headedness during blood collection
  • ●Very rare risk of infection at the puncture site

Interfering Factors

  • ●Improper sample collection or contamination may affect DNA quality
  • ●Incorrect patient identification or sample labelling
  • ●Recent allogeneic bone marrow transplantation may cause mixed DNA results in rare situations

Compare With Similar Tests

TestADAM9 Gene Cone-Rod Dystrophy Type 9 NGS Genetic TestADAM9 Gene Cone-Rod Dystrophy Type 9 NGS Genetic TestADAM9 Gene Cone-Rod Dystrophy Type 9 NGS Genetic Test
ComparisonADAM9 Gene Cone-Rod Dystrophy Type 9 NGS Genetic Test

Frequently Asked Questions

What is the ADAM9 Gene Cone-Rod Dystrophy Type 9 NGS Genetic Test?
It is a next-generation sequencing-based genetic test that reads the ADAM9 gene to detect mutations associated with cone-rod dystrophy type 9.
Which sample is required for this test?
A blood sample is required. DNA Labs India also offers free home sample collection for online bookings.
Is fasting required before the test?
No, fasting is not required for this genetic test.
How much does the ADAM9 Gene Cone-Rod Dystrophy Type 9 NGS Genetic Test cost?
The test cost is INR 20,000 at DNA Labs India.
When will I get the report?
Reports are generally delivered in 3 to 4 weeks after the sample reaches the laboratory.
What does a positive result mean?
A pathogenic or likely pathogenic variant in the ADAM9 gene confirms the genetic diagnosis of cone-rod dystrophy type 9 in the appropriate clinical context. Genetic counselling is recommended.
Can a negative result completely rule out cone-rod dystrophy?
A negative result significantly reduces the likelihood of ADAM9-related cone-rod dystrophy type 9, but it does not exclude inherited retinal disease caused by other genes.
Who should take this test?
Individuals with symptoms such as central vision loss, colour vision problems, night blindness, photophobia, family history of cone-rod dystrophy, or an existing clinical diagnosis needing genetic confirmation.
Is home sample collection available across India?
Yes, DNA Labs India offers free home sample collection for online bookings across major cities including Mumbai, Delhi, Bangalore, Hyderabad, Chennai, Kolkata, Pune, and many other locations.
Will insurance cover this genetic test?
Coverage varies by insurance provider and policy. This test is not pre-approved under government schemes; please check with your insurer and DNA Labs India for current coverage details.
Can this test be used for prenatal diagnosis?
This blood-based test is not intended for prenatal diagnosis. Couples planning pregnancy should discuss prenatal or preimplantation genetic testing with a clinical geneticist.
What should I do after receiving the report?
Share the report with your ophthalmologist and clinical geneticist. They will explain the result, discuss management and monitoring options, and recommend family testing if needed.
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.

Related Tests

Leber's Hereditary Optic Neuropathy (LHON) Mitochondrial Mutation Detection Test

₹25,000

Nx Gen Sequencing: Glaucoma Test

₹28,665

Nx Gen Sequencing: Corneal Dystrophy Test

₹28,665

Nx Gen Sequencing: Leber Congenital Amaurosis Test

₹28,665

Nx Gen Sequencing: Optic Atrophy Test

₹28,665

GPR143 Gene Albinism, Ocular Type I, Nettleship-Falls Type NGS Genetic Test

₹20,000
For Hospitals & Clinics

Reference Laboratory Services

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.

LIMS Integration

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.

Book Your Test

Enter your details and we'll connect you within 15 minutes.

🧬

Quick Connect

Enter your mobile number and we’ll connect you with the team.

+91

✅ Connecting you now...

🔒 Your number is used to respond to this request.