Chromosomes 13, 18, 21, X & Y Test
Also known as: Chromosomal Aneuploidy Test, FISH for Chromosomes 13, 18, 21, X, Y
Chromosomes 13, 18, 21, X & Y Test test available at DNA Labs India for ₹9,750. Uses FISH (Fluorescence In Situ Hybridization) on Amniotic fluid / Chorionic villi / Cord blood samples. Results in 3-4 days. Free home collection in 300+ cities across India.
🩺 Medically Reviewed By
Dr SULOCHANA HEMCHANDRA HOLLA
Consultant Medical Geneticist · Reg: 8532
Last reviewed: September 7, 2026
Overview
The purpose of this test is to identify numerical abnormalities (aneuploidy) in chromosomes 13, 18, 21, X, and Y. It helps diagnose genetic conditions that can cause developmental issues, intellectual disabilities, and other health problems. Early detection through prenatal testing enables timely medical intervention and genetic counseling.
- Test Code
- 2974
- Price
- ₹9,750
- Sample Type
- Amniotic fluid / Chorionic villi / Cord blood
- Result Time
- 3-4 days
- Fasting Required
- No
- Method
- FISH (Fluorescence In Situ Hybridization)
Sample Collection
A doctor's prescription is required. Prescription is not applicable for surgery and pregnancy cases or people planning to travel abroad.
Method: Aspiration for amniotic fluid, biopsy for chorionic villi, venipuncture for cord blood
Laboratory Analysis
Sample collection is performed by a trained phlebotomist or medical professional. For amniotic fluid, a needle is inserted into the uterus under ultrasound guidance.
Report Delivery
Apply pressure to the collection site to prevent bleeding. Keep the area clean and dry.
Timeline: 3-4 days
Patient Instructions
About This Test
Who Should Get This Test
The purpose of this test is to identify numerical abnormalities (aneuploidy) in chromosomes 13, 18, 21, X, and Y. It helps diagnose genetic conditions that can cause developmental issues, intellectual disabilities, and other health problems. Early detection through prenatal testing enables timely medical intervention and genetic counseling.
How to Prepare
- For amniotic fluid: Ultrasound-guided aspiration
- For chorionic villi: Biopsy procedure
- For cord blood: Venipuncture from umbilical cord
- Use sterile containers as specified
Doctor's Notes
Reviewed by Dr SULOCHANA HEMCHANDRA HOLLA — MBBS, MD (Medical Genetics) · Reg. No. 8532
"This test is essential for prenatal screening to detect chromosomal abnormalities that can lead to serious genetic conditions, allowing for early intervention and informed decision-making."
Last medically reviewed: September 7, 2026
Test Parameters & Specifications
Sample Stability
- Insufficient sample volume
- Contaminated sample
- Improper container or storage
Understanding Your Results
Normal
No abnormalities detected in chromosomes 13, 18, 21, X, and Y.
Trisomy 13
Three copies of chromosome 13, associated with Patau syndrome.
Trisomy 18
Three copies of chromosome 18, associated with Edwards syndrome.
Trisomy 21
Three copies of chromosome 21, associated with Down syndrome.
Monosomy X
One X chromosome, associated with Turner syndrome.
XXY
Extra X chromosome in males, associated with Klinefelter syndrome.
If you experience symptoms such as developmental delays, recurrent miscarriages, or have a family history of genetic disorders, consult a healthcare provider for this test.
Limitations
- ⚠Tests only specific chromosomes (13, 18, 21, X, Y)
- ⚠May not detect all genetic abnormalities
- ⚠Results require confirmation with karyotyping or other tests
Risks & Considerations
- ●For blood samples: Minor bruising or infection at puncture site
- ●For amniotic fluid: Risk of miscarriage (about 0.1-0.3%)
- ●For chorionic villi: Risk of miscarriage or infection
Interfering Factors
- ●Sample contamination
- ●Maternal cell contamination in prenatal samples
- ●Technical errors in FISH analysis
Frequently Asked Questions
What is the Chromosomes 13, 18, 21, X & Y test?
Why is this test recommended?
What samples are required for this test?
How is the test procedure done?
What is the cost of the Chromosomes 13, 18, 21, X & Y test at DNA Labs India?
Is home sample collection available for this test?
How long does it take to receive the test results?
What do abnormal results indicate?
Are there any risks involved in the test?
Do I need a doctor's prescription for this test?
Can this test detect all genetic disorders?
What should I do after getting the test results?
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₹7,371Reference Laboratory Services
We serve as a reference laboratory for hospitals and clinics across India. Send samples from your facility with same-day pickup, priority processing, and results delivered through our online portal. Competitive institutional pricing available.
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