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DNA Labs India

PROM1 Gene Cone-Rod Dystrophy Type 12 NGS Genetic Test

DNA Labs India | ISO 9001:2015 Certified

PROM1 Gene Cone-Rod Dystrophy Type 12 NGS Genetic Test

Short Name: PROM1 CORD12 NGS Test

Also known as: PROM1 Gene Cone-Rod Dystrophy Type 12 Test, CORD12 NGS Genetic Test, PROM1 Retinal Dystrophy Genetic Test

PROM1 Gene Cone-Rod Dystrophy Type 12 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 Samples are reported in 3 to 4 weeks from receipt of a complete and acceptable sample. The turnaround time includes DNA extraction, NGS sequencing, data analysis, variant interpretation, and medical report preparation.. Free home collection in 300+ cities across India.

NGS Gene SequencingChildren and Adults🏠 Home Collection

🩺 Medically Reviewed By

Overview

The purpose of this test is to identify a pathogenic or likely pathogenic variant in the PROM1 gene that may explain an individual's clinical presentation of cone-rod dystrophy type 12. The result helps confirm the molecular diagnosis, supports prognostication, and provides a basis for genetic counseling, family planning, and clinical management.

Test Code
3812
CPT Code
81479
ICD Code
H35.5
Price
₹20,000
Sample Type
Blood or Extracted DNA or One drop Blood on FTA Card
Result Time
Samples are reported in 3 to 4 weeks from receipt of a complete and acceptable sample. The turnaround time includes DNA extraction, NGS sequencing, data analysis, variant interpretation, and medical report preparation.
Fasting Required
No
Method
Next Generation Sequencing (NGS)
Step 1

Sample Collection

No fasting is required. No special dietary preparation is needed. Please carry a valid photo ID and any ophthalmology records or referral documents. Inform the lab staff about any recent blood transfusion or bone marrow transplant, as this may affect DNA analysis.

Method: Venipuncture or FTA card blood spot

Step 2

Laboratory Analysis

A trained phlebotomist will collect the sample. For FTA card collection, one or more drops of blood are placed on the FTA card. The procedure is quick and generally painless.

Step 3

Report Delivery

No post-test precautions are required. You may resume all routine activities immediately after sample collection.

Timeline: Samples are reported in 3 to 4 weeks from receipt of a complete and acceptable sample. The turnaround time includes DNA extraction, NGS sequencing, data analysis, variant interpretation, and medical report preparation.

Patient Instructions

1
Before the Test:No special preparation is required. No fasting is needed. Complete the test request form and consult with a genetic counselor before testing.
2
During the Test:This is an in-vitro test conducted on the submitted sample. You do not need to be present during the actual laboratory analysis.
3
After the Test:You will be notified when the report is ready. The report will be shared through the requested delivery channel.

About This Test

Who Should Get This Test

The purpose of this test is to identify a pathogenic or likely pathogenic variant in the PROM1 gene that may explain an individual's clinical presentation of cone-rod dystrophy type 12. The result helps confirm the molecular diagnosis, supports prognostication, and provides a basis for genetic counseling, family planning, and clinical management.

How to Prepare

  • Blood, extracted DNA, or one drop of blood on FTA card can be submitted.
  • Clearly label the sample with the patient's name, date of birth, and collection date.
  • Do not freeze whole blood; store at room temperature or 2-8°C until transport.
  • Home collection is available at no extra cost for online bookings.
  • The sample should be accompanied by a completed test requisition form and clinical indication.

Doctor's Notes

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

"A detailed three-generation family history and ophthalmological evaluation are essential before offering PROM1 genetic testing. Genetic counseling is recommended for all patients with inherited retinal dystrophies."

Last medically reviewed: September 7, 2026

Test Parameters & Specifications

Sample TypeBlood or Extracted DNA or One drop Blood on FTA Card
Sample VolumeAs required for the selected sample type
ContainerEDTA vacutainer / DNA tube / FTA card
Collection MethodVenipuncture or FTA card blood spot

Sample Stability

Whole blood in EDTA: stable up to 72 hours at room temperature; 7 days at 2-8°C
Extracted DNA: stable at -20°C for long-term storage
FTA card blood spots: stable at room temperature for several years
Sample Rejection Criteria:
  • Sample received without proper labeling or requisition form
  • Clotted or hemolyzed blood sample
  • Insufficient quantity of extracted DNA
  • Sample exposed to extreme temperatures or incorrect storage
  • Mismatch between sample label and test request form

Understanding Your Results

This is a molecular diagnostic test; results should always be interpreted in the context of clinical findings, family history, and a formal genetic counseling session.
Positive: A pathogenic or likely pathogenic variant detected in PROM1 confirms the molecular diagnosis of PROM1-related cone-rod dystrophy type 12 in the appropriate clinical setting.
Negative: No pathogenic or likely pathogenic PROM1 variant identified. A negative result does not exclude a genetic cause in other genes and should be interpreted cautiously.
Variant of Uncertain Significance (VUS): This result should not be used alone for diagnosis. Additional family studies and further genetic evaluation may be needed.
⚠️ When to Consult a Doctor:

If you or a family member have progressive visual loss, reduced color perception, photophobia, or a known inherited retinal dystrophy, please consult an ophthalmologist and a clinical geneticist. A positive, negative, or uncertain genetic test result should always be discussed with a qualified genetic counselor.

Limitations

  • This is a single-gene test and does not include analysis of other genes associated with inherited retinal dystrophies.
  • NGS may not detect all types of genetic changes, including large deletions or duplications, deep intronic variants, repeat expansions, and certain structural rearrangements.
  • A variant of uncertain significance (VUS) may be reported and requires additional clinical correlation or family segregation studies.
  • A negative result does not exclude a non-genetic cause or a mutation in another gene.
  • The test is not intended for diagnostic purposes without clinical correlation and appropriate genetic counseling.

Risks & Considerations

  • Minimal risk of bruising, bleeding, or infection at the venipuncture site
  • No major physical risks associated with NGS genetic testing
  • Potential psychological impact of receiving an unexpected or uncertain result
  • Possibility of identifying a variant of uncertain significance

Interfering Factors

  • Mixing or incorrect labeling of samples
  • Contaminated, degraded, or insufficient DNA
  • Very low sequencing coverage in certain regions of PROM1
  • Presence of homologous pseudogene sequences
  • Recent allogeneic bone marrow transplantation may affect germline DNA results

Compare With Similar Tests

TestPROM1 Gene Cone-Rod Dystrophy Type 12 NGS Genetic TestPROM1 Single-Gene NGS Genetic TestABCA4 Gene NGS Genetic TestRetinal Dystrophy Multi-Gene NGS PanelWhole Exome Sequencing for Inherited Retinal Disorders
ComparisonPROM1 Gene Cone-Rod Dystrophy Type 12 NGS Genetic Test

Frequently Asked Questions

What is PROM1 Gene Cone-Rod Dystrophy Type 12?
PROM1-related cone-rod dystrophy type 12 is an inherited retinal disease caused by pathogenic variants in the PROM1 gene. The condition affects the cone and rod photoreceptor cells and leads to progressive vision loss.
What does the PROM1 Gene NGS Genetic Test do?
This test uses next generation sequencing (NGS) to analyze the PROM1 gene for pathogenic or likely pathogenic variants associated with cone-rod dystrophy type 12.
Who should consider this test?
People with clinical features of cone-rod dystrophy, such as reduced central vision, color vision defects, photophobia, and a family history of inherited retinal dystrophy, may consider this test after evaluation by an ophthalmologist and genetic counselor.
What is the cost of the test?
The price is Rs 20000.0. Free home sample collection is provided for online bookings across many cities in India.
What sample is required?
Blood, extracted DNA, or one drop of blood on an FTA card can be used. Fasting is not required.
How long does the report take?
The clinical report is usually available in 3 to 4 weeks.
Do I get raw data with the report?
Yes. DNA Labs India provides raw data files (FASTQ and VCF) along with the clinical report for transparency and future re-analysis.
What do the results tell me?
A positive result identifies a disease-associated PROM1 variant and supports the diagnosis. A negative result does not completely exclude a genetic cause and should be interpreted with the clinical picture.
Is this test covered by insurance?
Insurance coverage varies. The test is currently not guaranteed to be covered. It is advisable to check with your insurer for genetic testing reimbursement.
Will NGS detect all PROM1 mutations?
NGS covers coding exons and splice junctions well, but may miss certain large deletions, deep intronic changes, complex rearrangements, or repetitive regions. Limitations are mentioned in the report.
Why do we also need genetic counseling?
Genetic testing for inherited retinal dystrophy has emotional and family implications. Counseling helps explain the result, inheritance pattern, risks to relatives, and clinical management options.
How can I book the test?
You can book online through the DNA Labs India website. Free home sample collection is available in multiple cities, including Delhi, Mumbai, Bangalore, Hyderabad, Chennai, Kolkata, Pune, Ahmedabad, and others.
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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