Del(7q) (MDS) Test
Short Name: Del(7q) FISH
Also known as: 7q deletion syndrome, Monosomy 7 FISH, Chromosome 7q deletion analysis
Del(7q) (MDS) Test test available at DNA Labs India for ₹5,250. Uses Fluorescence In Situ Hybridization (FISH) on Bone Marrow / Peripheral Blood samples. Results in Reports are typically available within 3-4 days after the sample reaches the lab.. Free home collection in 300+ cities across India.
🩺 Medically Reviewed By
Dr Pasupathy Arumugam
Consultant Pathologist · Reg: 21521
Last reviewed: September 7, 2026
Overview
The purpose of the Del(7q) MDS test is to detect the deletion of the long arm of chromosome 7 in patients with suspected or confirmed MDS. This genetic abnormality is important for diagnosis, prognosis, and treatment planning. The test helps in identifying patients who may benefit from specific therapies, such as lenalidomide, and in monitoring disease progression.
- Test Code
- 6081
- CPT Code
- 88271, 88275
- ICD Code
- D46.9
- Price
- ₹5,250
- Sample Type
- Bone Marrow / Peripheral Blood
- Result Time
- Reports are typically available within 3-4 days after the sample reaches the lab.
- Fasting Required
- No
- Method
- Fluorescence In Situ Hybridization (FISH)
Sample Collection
No special preparation required. Inform your doctor about any medications you are taking.
Method: Venipuncture or Bone Marrow Aspiration
Laboratory Analysis
The sample is collected by a trained phlebotomist or doctor. For bone marrow, a local anesthetic is used.
Report Delivery
You can resume normal activities immediately. If bone marrow biopsy was done, keep the site clean and dry.
Timeline: Reports are typically available within 3-4 days after the sample reaches the lab.
Patient Instructions
About This Test
Who Should Get This Test
The purpose of the Del(7q) MDS test is to detect the deletion of the long arm of chromosome 7 in patients with suspected or confirmed MDS. This genetic abnormality is important for diagnosis, prognosis, and treatment planning. The test helps in identifying patients who may benefit from specific therapies, such as lenalidomide, and in monitoring disease progression.
How to Prepare
- Use Sodium Heparin Vacutainer for blood sample
- Bone marrow sample should be collected by a qualified professional
- Sample should be transported to the lab at ambient temperature
- Avoid freezing the sample
Doctor's Notes
Reviewed by Dr Pasupathy Arumugam — MBBS, MD (Pathology) · Reg. No. 21521
"Del(7q) is a common cytogenetic abnormality in MDS, often associated with poor prognosis. Early detection via FISH is crucial for risk stratification and treatment planning."
Last medically reviewed: September 7, 2026
Test Parameters & Specifications
Sample Stability
- Clotted sample
- Hemolyzed sample
- Incorrect container
- Sample not reaching lab within 48 hours
Understanding Your Results
Positive for 7q deletion
Indicates presence of 7q deletion, associated with poor prognosis. Treatment may include targeted therapy or transplant.
Negative for 7q deletion
No 7q deletion detected. Other genetic abnormalities may be present. Further testing may be needed.
Consult your doctor if you experience symptoms such as persistent fatigue, frequent infections, easy bruising or bleeding, shortness of breath, or unexplained weight loss. Early diagnosis and management of MDS are crucial.
Limitations
- ⚠FISH only detects specific deletions targeted by the probes, not all chromosomal abnormalities
- ⚠Results should be correlated with clinical findings and other tests
- ⚠May not detect small deletions below the resolution of FISH probes
Risks & Considerations
- ●Minimal risk of bleeding or infection at the blood draw site
- ●For bone marrow biopsy: rare risk of bleeding, infection, or discomfort
Interfering Factors
- ●Inadequate sample volume or poor sample quality
- ●Clotted blood sample
- ●Delayed processing of sample
- ●Prior chemotherapy or radiation therapy may affect results
- ●Low cellularity in bone marrow sample
Compare With Similar Tests
| Test | Del(7q) (MDS) | Conventional Cytogenetics (Karyotype) | FISH Panel for MDS | Next-Generation Sequencing (NGS) for MDS |
|---|---|---|---|---|
| Comparison | Del(7q) (MDS) |
Frequently Asked Questions
What is Del(7q) MDS?
What is the cost of Del(7q) MDS test in India?
What sample is required for Del(7q) MDS test?
Do I need to fast before the Del(7q) MDS test?
How long does it take to get Del(7q) MDS test results?
Is home sample collection available for Del(7q) MDS test?
What is the purpose of Del(7q) FISH test?
Can Del(7q) MDS be detected by routine blood tests?
What does a positive Del(7q) result mean?
Is Del(7q) MDS hereditary?
What are the symptoms of Del(7q) MDS?
How is Del(7q) MDS treated?
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