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FISH for Aneuploidy - Single Marker (Prenatal)

FISH for Aneuploidy - Single Marker (Prenatal)

FISH for Aneuploidy with a single marker is a critical prenatal diagnostic test that evaluates the presence of an abnormal number of a specific chromosome in the fetus. This test employs the Fluorescence In Situ Hybridization (FISH) technique, which uses fluorescent probes to attach to a specific chromosome, allowing for visualization and enumeration. Detecting chromosomal abnormalities during pregnancy is of utmost importance as it can have a significant impact on the health and development of the fetus.

Utilizing a single marker means that the test focuses on one particular chromosome. The choice of which chromosome to examine is usually based on various factors, including family history and the results of other screening tests. For example, focusing on chromosome 21 would be relevant for assessing the risk of Down syndrome.

  • Test NameFISH for Aneuploidy - Single Marker (Prenatal)
  • Sample TypeAmniotic fluid or chorionic villus sample (CVS)
  • Preparations RequiredThere are no specific preparations required for the test. However, it’s important to follow the doctor’s instructions regarding the amniocentesis or CVS procedures.
  • Report Time5 days
Why is the FISH for Aneuploidy with a single marker test done?

This test is conducted to detect if there is an abnormal number of a specific chromosome in the fetus, which may indicate a chromosomal disorder. Early detection allows for better planning and decision- making regarding the pregnancy.

How is the sample for this test collected?

The sample is usually collected through an amniocentesis, where a small amount of amniotic fluid is extracted, or through chorionic villus sampling (CVS), which involves taking a small sample of the placenta.

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 type of disorder this test can detect depends on the specific chromosome being examined. For example, examining chromosome 21 can detect Down syndrome.

Yes, FISH is considered highly accurate in detecting the number of specific chromosomes.

The test itself does not have risks, but the sample collection procedures (amniocentesis or CVS) carry a small risk of infection or miscarriage.

If the results are abnormal, it is essential to consult your doctor to understand the implications and discuss the available options and next steps for managing the pregnancy.

In theory, yes, but it is usually performed on chromosomes that are commonly associated with known disorders, like chromosomes 13, 18, 21, X, and Y.

No, this test is typically recommended in pregnancies where there is a higher risk for chromosomal abnormalities due to family history, maternal age, or abnormal screening results.

Yes, if the test is examining chromosomes X and Y, itcan determine the gender of the baby.

Testing a single marker is quicker and might be preferred if there is a specific concern based on family history or other screenings. Testing multiple markers provides a broader assessment of chromosomal health.

No, this test is often used in conjunction with other prenatal tests for a comprehensive understanding of the fetus’s health.

Yes, genetic counseling is often recommended both before and after the test to help understand the results and implications.

Coverage for this test varies by insurance provider and plan. It is advisable to check with your insurance company beforehand.

This test is usually performed in the first or early second trimester, between 11 and 20 weeks of pregnancy.

Consider your risk factors, the accuracy and limitations of the test, the risks involved in sample collection, and the information you hope to gain from the results.

The FISH for Aneuploidy with a single marker is an invaluable tool in prenatal care. By allowing for the early detection of chromosomal abnormalities, this test enables expectant parents and physicians to make informed decisions regarding the pregnancy and the health of the unborn child. It is crucial to work closely with your doctor and consider genetic counseling to fully understand the significance of the test results and weigh the available options. Through informed decision-making and proactive care, you can take steps to ensure the health and well-being of your child.

FISH for Aneuploidy - Single Marker (Prenatal)
₹ 3500
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