FISH - 22q Deletion or LSI Di George / VCFS Test
Also known as: DiGeorge Syndrome, VCFS, 22q11.2 Deletion Syndrome, DiGeorge/VCFS Syndrome
FISH - 22q Deletion or LSI Di George / VCFS Test test available at DNA Labs India for ₹8,000. Uses FISH on Whole blood samples. Results in 4 Working days. Free home collection in 300+ cities across India.
🩺 Medically Reviewed By
Dr Pasupathy Arumugam
Consultant Pathologist · Reg: 21521
Last reviewed: September 7, 2026
Overview
To diagnose genetic disorders related to 22q11.2 deletion, such as DiGeorge syndrome and VCFS, enabling timely management and genetic counseling.
- Test Code
- 565
- Price
- ₹8,000
- Sample Type
- Whole blood
- Result Time
- 4 Working days
- Fasting Required
- No
- Method
- FISH
Sample Collection
Ensure Chromosome & FISH analysis Requisition Form (Form 17) is duly filled.
Method: Venipuncture
Laboratory Analysis
A blood sample will be drawn from a vein.
Report Delivery
Apply pressure to the puncture site to stop bleeding.
Timeline: 4 Working days
Patient Instructions
About This Test
Who Should Get This Test
To diagnose genetic disorders related to 22q11.2 deletion, such as DiGeorge syndrome and VCFS, enabling timely management and genetic counseling.
How to Prepare
- No fasting required
- Fill Form 17
- Ship at 18-22°C
- Do not freeze
Doctor's Notes
Reviewed by Dr Pasupathy Arumugam — MBBS, MD (Pathology) · Reg. No. 21521
"Early detection of 22q11.2 deletion through FISH testing is vital for managing associated health issues and providing genetic counseling to affected families."
Last medically reviewed: September 7, 2026
Test Parameters & Specifications
Sample Stability
- Hemolyzed sample
- Insufficient volume
- Incorrect tube type
Understanding Your Results
Normal
No deletion or duplication detected in 22q11.2 region.
Abnormal
Deletion or duplication detected, indicating possible DiGeorge syndrome or related disorder.
If the test result is abnormal, or if symptoms persist, consult a geneticist or pediatrician for further evaluation and management.
Limitations
- ⚠FISH may not detect all types of mutations
- ⚠Cannot detect point mutations
Risks & Considerations
- ●Minor bruising at blood draw site
- ●Infection (rare)
Interfering Factors
- ●Sample contamination
- ●Improper sample handling
Frequently Asked Questions
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