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FAAH2 Gene Autism, FAAH2 Related NGS Genetic Test

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FAAH2 Gene Autism, FAAH2 Related NGS Genetic Test

Short Name: FAAH2 Autism NGS Test

Also known as: FAAH2 Gene Autism Test, FAAH2 NGS Genetic Test, FAAH2 Gene Sequencing for Autism

FAAH2 Gene Autism, FAAH2 Related 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 after the sample reaches the laboratory.. Free home collection in 300+ cities across India.

NGS Genetic TestAll Ages🏠 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

The test is designed to detect genetic variants in the FAAH2 gene associated with autism spectrum disorder. It provides clinicians with genetic information that can complement developmental and behavioural assessments, clarify the genetic contribution to ASD, and assist in genetic counselling of the family.

Test Code
3922
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 after the sample reaches the laboratory.
Fasting Required
No
Method
Next-Generation Sequencing (NGS)
Step 1

Sample Collection

No fasting is required. A pre-test genetic counselling session is advised to discuss the purpose, limitations and expected outcomes of the test. A clinical history should be provided, and a pedigree chart of family members affected with autism or related neurodevelopmental conditions will be prepared during counselling.

Method: Blood draw, saliva sample, or blood spot on FTA card

Step 2

Laboratory Analysis

The sample is collected by a trained phlebotomist. For blood, 2-3 ml is drawn in an EDTA tube. If preferred, one drop of blood is placed on an FTA card. Alternatively, a saliva sample can be collected using the provided kit.

Step 3

Report Delivery

No special precautions are required after sample collection. The patient can resume normal daily activities. The sample will be transported to the laboratory under recommended storage conditions.

Timeline: Reports are delivered within 3 to 4 weeks after the sample reaches the laboratory.

Patient Instructions

1
Before the Test:A pre-test genetic counselling session is recommended. The counsellor will record detailed family history and draw a pedigree chart. No fasting or special preparation is needed. Information about insurance coverage and report timing will be shared before sample collection.
2
During the Test:During the test, a blood sample is taken from a vein, or a blood spot/saliva sample is collected as per the home collection instruction. The process is quick and usually takes only a few minutes.
3
After the Test:Once the sample reaches the laboratory, NGS analysis is carried out. Turnaround time is 3 to 4 weeks. The report will be shared on the portal and by email. A post-test genetic counselling session will help explain the result.

About This Test

Who Should Get This Test

The test is designed to detect genetic variants in the FAAH2 gene associated with autism spectrum disorder. It provides clinicians with genetic information that can complement developmental and behavioural assessments, clarify the genetic contribution to ASD, and assist in genetic counselling of the family.

How to Prepare

  • Keep the sample at room temperature before dispatch if collected on FTA card.
  • If venous blood is collected, the EDTA tube should be gently inverted 8-10 times.
  • Label the sample container with the patient name, date of birth and collection date.
  • Avoid direct handling of the FTA card area; use clean gloves.
  • The sample may be stored at 2-8°C for up to 48 hours before shipping.

Doctor's Notes

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

"When autism spectrum disorder presents in a child, a genetic test such as the FAAH2 NGS panel can help families understand recurrence risk and guide counselling. If a variant is identified, personalised management and family screening should be considered."

Last medically reviewed: September 7, 2026

Test Parameters & Specifications

Sample TypeBlood or Extracted DNA or One drop Blood on FTA Card
Sample Volume2-3 ml blood or equivalent extracted DNA
ContainerEDTA tube / FTA card
Collection MethodBlood draw, saliva sample, or blood spot on FTA card

Sample Stability

EDTA blood: 48 hours at 2-8°C
FTA blood spot: stable at room temperature for several days
Extracted DNA: stable at -20°C or lower
Sample Rejection Criteria:
  • Hemolyzed or clotted blood sample
  • Insufficient sample quantity preventing DNA extraction
  • Sample leaking in transit
  • Unlabeled or mislabeled sample
  • Sample received after prolonged transit time without proper storage

Understanding Your Results

The interpretation of the FAAH2 gene NGS test should be made by a clinical geneticist in the context of the patient's clinical presentation and family history. The report will include identified variants, their classification, and a concise clinical interpretation.
📊

Negative

No pathogenic or likely pathogenic variant detected in the FAAH2 gene. This does not rule out autism caused by other genes or non-genetic factors.

📊

Positive

A pathogenic or likely pathogenic variant in the FAAH2 gene was identified, which may contribute to the autism phenotype. Genetic counselling and family screening are recommended.

📊

Variant of Uncertain Significance

A DNA variant was detected, but its effect on the FAAH2 protein is unknown. Additional family studies may help clarify its clinical significance.

⚠️ When to Consult a Doctor:

Consult a clinical geneticist, neurologist or paediatrician if the child shows early signs of autism, communication difficulties, restricted interests, repetitive behaviour, or has a family history of a FAAH2-related condition. Post-test genetic counselling should be scheduled for all positive, negative and VUS results.

Limitations

  • ⚠NGS may not detect large structural rearrangements, repeat expansions, or deep intronic variants.
  • ⚠Mosaic variants below the detection threshold may not be reported.
  • ⚠Variants of uncertain significance (VUS) may be identified; interpretation requires clinical correlation and family testing.
  • ⚠A negative result does not exclude all genetic or non-genetic causes of autism spectrum disorder.
  • ⚠This test is not intended to diagnose autism independently; it is an adjunct to clinical assessment.

Risks & Considerations

  • ●Slight pain or bruising at the blood collection site
  • ●Minimal risk of infection at the puncture site, which is reduced by standard sterile technique
  • ●No radiation exposure associated with this genetic test

Interfering Factors

  • ●Recent allogeneic bone marrow transplantation
  • ●Recent blood transfusion within 48 hours may contaminate sample
  • ●Insufficient or degraded DNA
  • ●Tissue or DNA contamination with another individual's genetic material

Compare With Similar Tests

TestFAAH2 Gene Autism, FAAH2 Related NGS Genetic TestFAAH2 Gene NGS TestAutism/Intellectual Disability NGS PanelWhole Exome SequencingChromosomal Microarray Analysis
ComparisonFAAH2 Gene Autism, FAAH2 Related NGS Genetic Test

Frequently Asked Questions

What is the FAAH2 gene?
FAAH2 is the fatty acid amide hydrolase 2 gene. It is part of the endocannabinoid system, which helps regulate brain development, mood, appetite and pain sensation. Some studies have linked FAAH2 gene variants to autism spectrum disorder.
How is the FAAH2 related NGS genetic test performed?
Next-generation sequencing is used to read the DNA sequence of the FAAH2 gene from a blood, saliva or FTA card sample. The sequence is compared with a reference to identify variants associated with autism.
What is the cost of the FAAH2 gene autism test at DNA Labs India?
The test costs Rs 20000. This includes the genetic analysis, home sample collection, genetic counselling session and report.
What sample is needed for this test?
The sample can be 2-3 ml blood in an EDTA tube, extracted DNA, or one drop of blood on an FTA card. Saliva may also be accepted depending on the kit provided.
Is home sample collection available?
Yes. DNA Labs India offers free home sample collection for online bookings across many cities in India, including Mumbai, Delhi, Bangalore, Hyderabad, Chennai and Kolkata.
Do I need to fast before the test?
No. Fasting is not required for the FAAH2 gene NGS genetic test.
What is the turnaround time for this test?
Reports are generally delivered within 3 to 4 weeks after the sample reaches the laboratory.
Can this test alone confirm autism?
No. Autism is diagnosed through a combination of behavioural, developmental and clinical assessments. This genetic test provides supporting information about FAAH2-related risks and should be interpreted in the clinical context.
What does a negative result mean?
A negative result means no pathogenic or likely pathogenic variant was found in the FAAH2 gene. It does not exclude autism or a genetic cause linked to another gene.
Who should order this test?
The test is usually recommended by a child neurologist, paediatrician, psychiatrist or clinical geneticist. It is suitable for patients with autism spectrum disorder or related neurodevelopmental concerns, especially when a genetic cause is suspected.
Is pre-test genetic counselling necessary?
Yes. A genetic counselling session is recommended before the test so that the family understands the purpose, limitations and possible outcomes. The counsellor also prepares a pedigree chart of affected family members.
Are there any risks from the test?
The sample collection is safe. Blood collection may cause slight pain or bruising at the puncture site. No significant medical risks are associated with the genetic test itself.
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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