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PNP Gene Immunodeficiency due to purine nucleoside phosphorylase deficiency NGS Genetic Test

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PNP Gene Immunodeficiency due to purine nucleoside phosphorylase deficiency NGS Genetic Test

Short Name: PNP Immunodeficiency NGS Test

Also known as: PNP Deficiency Genetic Test, Purine Nucleoside Phosphorylase Deficiency NGS Test, PNP Gene Sequencing Test

PNP Gene Immunodeficiency due to purine nucleoside phosphorylase deficiency 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.

Next Generation Sequencing (NGS)🏠 Home Collection

🩺 Medically Reviewed By

Overview

To diagnose purine nucleoside phosphorylase deficiency through comprehensive genetic analysis of the PNP gene, enabling early intervention and management of associated immunodeficiency.

Test Code
5001
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

No specific preparation required. Provide clinical history and genetic counseling information.

Method: Venipuncture or finger prick for FTA card

Step 2

Laboratory Analysis

Blood sample collected via venipuncture or a drop on FTA card. Minimal discomfort.

Step 3

Report Delivery

Apply pressure to the puncture site to prevent bruising. Resume normal activities.

Timeline: 3 to 4 weeks

Patient Instructions

1
Before the Test:Provide detailed clinical history and undergo genetic counseling to understand the test implications.
2
During the Test:A blood sample is drawn and sent for NGS analysis. The process is non-invasive and quick.
3
After the Test:Results are available in 3-4 weeks. Follow-up with a genetic counselor or specialist is advised.

About This Test

Who Should Get This Test

To diagnose purine nucleoside phosphorylase deficiency through comprehensive genetic analysis of the PNP gene, enabling early intervention and management of associated immunodeficiency.

How to Prepare

  • Ensure proper identification of the patient
  • Use sterile equipment for blood collection
  • Label samples correctly with patient details
  • Store samples at ambient temperature as specified

Doctor's Notes

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

"Early genetic diagnosis of PNP deficiency is vital for timely intervention, such as hematopoietic stem cell transplantation, to prevent life-threatening infections and improve outcomes."

Last medically reviewed: September 7, 2026

Test Parameters & Specifications

Sample TypeBlood or Extracted DNA or One drop Blood on FTA Card
Sample Volume3-5 mL of blood
ContainerEDTA tube or FTA card
Collection MethodVenipuncture or finger prick for FTA card

Sample Stability

Blood in EDTA tube
FTA card
Sample Rejection Criteria:
  • Hemolyzed or contaminated samples
  • Insufficient sample volume
  • Incorrect labeling or missing patient information

Understanding Your Results

Results indicate the presence or absence of pathogenic variants in the PNP gene. A positive result confirms diagnosis, while a negative result may require further testing if clinical suspicion remains high.
📊

Positive for pathogenic variant

Confirms diagnosis of PNP Gene Immunodeficiency. Genetic counseling and specialist referral recommended.

📊

Negative for pathogenic variant

No mutations detected in the PNP gene. Consider other genetic or non-genetic causes if symptoms persist.

📊

Variant of uncertain significance

Further testing or family studies may be needed for clarification.

⚠️ When to Consult a Doctor:

Consult a doctor if you experience recurrent infections, failure to thrive, or have a family history of immunodeficiency. After a positive test result, seek immediate specialist care for management options.

Limitations

  • May not detect all types of genetic variants, such as large deletions or intronic mutations
  • Results should be interpreted in conjunction with clinical findings and family history
  • Does not rule out other genetic causes of immunodeficiency

Risks & Considerations

  • Minimal risks from blood draw, such as bruising or infection
  • Psychological impact of genetic results
  • No significant medical risks from the test itself

Interfering Factors

  • Sample contamination
  • Degraded DNA quality
  • Recent blood transfusion may affect results
  • Improper sample storage

Compare With Similar Tests

TestPNP Gene Immunodeficiency due to purine nucleoside phosphorylase deficiency NGS Genetic TestADA Gene SCID NGS TestRAG1 Gene Immunodeficiency NGS Test
ComparisonPNP Gene Immunodeficiency due to purine nucleoside phosphorylase deficiency NGS Genetic TestBoth test for immunodeficiency, but ADA deficiency involves adenosine deaminase enzyme.Targets different gene for combined immunodeficiency with distinct clinical features.

Frequently Asked Questions

What is PNP Gene Immunodeficiency?
PNP Gene Immunodeficiency is a rare genetic disorder caused by deficiency in the purine nucleoside phosphorylase enzyme, leading to impaired immune function and increased susceptibility to infections.
What are the common symptoms of PNP deficiency?
Symptoms include recurrent respiratory and gastrointestinal infections, failure to thrive, developmental delays, enlarged liver and spleen, and neurological abnormalities.
How is PNP Gene Immunodeficiency diagnosed?
Diagnosis is confirmed through genetic testing, specifically Next Generation Sequencing (NGS) of the PNP gene, which identifies pathogenic mutations.
What does the NGS Genetic Test involve?
The test analyzes DNA from a blood sample to sequence the PNP gene and detect mutations associated with immunodeficiency.
What is the cost of the NGS Genetic Test in India?
The cost is approximately INR 20,000 at DNA Labs India, with free home sample collection available.
Is the test covered by insurance?
Genetic testing may not be covered by insurance, but some plans might cover it if deemed medically necessary. Check with your provider.
How long does it take to get the test results?
Results are typically available within 3 to 4 weeks after sample collection.
What sample is required for the test?
A blood sample, extracted DNA, or a drop of blood on an FTA card is required.
Is home sample collection available?
Yes, DNA Labs India offers free home sample collection across India for this test.
Are there any risks associated with the test?
The test involves minimal risks from blood draw, such as bruising. There are no significant medical risks from the genetic analysis itself.
Can PNP deficiency be treated?
Treatment may include hematopoietic stem cell transplantation, supportive care, and infection management. Early diagnosis improves outcomes.
How accurate is the NGS Genetic Test?
NGS is highly accurate for detecting genetic mutations, but results should be interpreted in clinical context. It may not detect all variant types.
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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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.

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