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FISH for Aneuploidy - 3 Markers Chr 13, 18, 21 (Prenatal)

FISH for Aneuploidy - 3 Markers Chr 13, 18, 21 (Prenatal)

FISH for Aneuploidy is a specialized prenatal diagnostic test that is specifically designed to detect chromosomal abnormalities in the fetus. This test examines chromosomes 13, 18, and 21, which are commonly associated with genetic disorders. Chromosome 21 abnormalities are associated with Down syndrome, while chromosome 13 and 18 abnormalities are linked to Patau syndrome and Edwards syndrome, respectively. These conditions are characterized by a range of physical and intellectual disabilities. FISH, which stands for Fluorescence In Situ Hybridization, uses fluorescent probes that bind to the chromosomes in a sample, allowing for the visualization and enumeration of these chromosomes. This makes it possible to determine whether there is an abnormal number of chromosomes present.


  • Test NameFISH for Aneuploidy - 3 Markers Chr 13, 18, 21 (Prenatal)
  • Sample TypeAmniotic fluid or chorionic villus sampling (CVS)
  • Preparations RequiredThere are no specific preparations for the test itself. However, pregnant women should adhere to the doctor’s instructions concerning the collection procedures (amniocentesis or CVS).
  • Report Time5 days

Why is this test important during pregnancy?

This test uses Fluorescence In Situ Hybridization to detect the presence of an abnormal number of chromosomes 13, 18, and 21 in a fetus, which are associated with certain genetic disorders.

How is the test performed?

This test is critical for early detection of chromosomal abnormalities, allowing parents and doctors to make well-informed decisions regarding the management of the pregnancy and the health of the baby.

Home Sample Collection Process
1
Book your convenient slot
Book your convenient slot
2
Sample Collection by Phlebotomist
Sample Collection by Phlebotomist
3
Reporting of the sample at lab
Reporting of the sample at lab
4
Download Reports
Download Reports
Frequently Asked Questions

The test is performed on a sample of amniotic fluid or placental tissue obtained through amniocentesis or chorionic villus sampling. The sample is then analyzed using fluorescent probes that bind to the chromosomes of interest.

This test is usually performed in the second trimester of pregnancy, but can be done earlier through CVS.

If an abnormal number of chromosomes 13, 18, or 21 is detected, it suggests the presence of a chromosomal disorder. A normal result indicates the usual number of these chromosomes.

There are no risks associated with the test itself, but the collection procedures (amniocentesis or CVS) have a small risk of infection or miscarriage.

No, this test requires specialized equipment and must be performed in a laboratory.

If the results are abnormal, it is important to consult with your doctor to understand the implications and discuss the options available for pregnancy management and the care of the baby.

No, lifestyle or medications do not affect the number of chromosomes in a fetus.

This particular test targets chromosomes 13, 18, and 21 specifically, which are associated with Down syndrome, Patau syndrome, and Edwards syndrome.

The FISH for Aneuploidy test is highly accurate in detecting the number of specific chromosomes, but it is not a replacement for other comprehensive chromosome studies.

No, the FISH test is specific to certain chromosomes and does not detect all genetic disorders.

Alternatives include karyotyping and other forms of prenatal genetic testing, such as cell-free fetal DNA testing.

No, this test only determines the presence of an abnormal number of specific chromosomes; it does not provide information on the severity of the condition.

Yes, genetic counseling is highly recommended following the test, especially if abnormal results are obtained, to understand the implications and explore options for managing the pregnancy.

FISH for Aneuploidy - 3 Markers Chr 13, 18, 21 is a crucial prenatal test that plays a vital role in early detection of chromosomal abnormalities in an unborn child. This test specifically focuses on chromosomes 13, 18, and 21, and is essential in the diagnosis of Down syndrome, Patau syndrome, and Edwards syndrome. The information obtained through this test is invaluable for expecting parents and their medical team in making informed decisions regarding the management of the pregnancy. It is important to have a thorough discussion with your doctor about the results and implications of this test and to consider genetic counseling, particularly if the results are abnormal.

FISH for Aneuploidy - 3 Markers Chr 13,18, 21 (Prenatal)
₹ 6000
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