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FISH for Trisomy 16

FISH for Trisomy 16

Fluorescence in situ Hybridization, popularly known as the FISH test, is a specialized kind of genetic test used to detect and map out the genetic material in an individual's cells. This test is particularly useful for identifying specific characteristics in DNA, such as the presence of an additional chromosome, which is a marker for conditions like Trisomy 16.

Trisomy denotes a condition where an extra chromosome is found in some or all of a person's cells. In particular, Trisomy 16 is a common chromosomal disorder that can lead to complications during pregnancy. Although full Trisomy 16 is considered incompatible with life, mosaic Trisomy 16, where only some cells contain the extra chromosome, can result in live births.

The FISH test uses fluorescent probes that bind to those parts of the chromosome which display a high degree of sequence similarity. This feature makes it possible to visualize specific regions in the genome, thereby aiding in the detection of structural and numerical chromosomal abnormalities. For Trisomy 16, an early diagnosis is critical to appropriately manage the pregnancy and to prepare for potential neonatal care needs.

  • Test NameFISH for Trisomy 16
  • Sample TypeBlood
  • Preparations RequiredNo specific preparation needed before this test.
  • Report Time5 days

What makes the FISH test important for diagnosing Trisomy 16?

The FISH test holds significant importance in diagnosing Trisomy 16 as it allows for an early and precise detection of this chromosomal abnormality. A timely diagnosis can help manage the condition and the pregnancy more effectively, providing the best possible care for the baby and the mother.

Is there any need to fast before this test?

No, fasting is not required before a FISH test. Individuals can continue their regular dietary habits prior to undergoing this diagnostic procedure.

Home Sample Collection Process

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Sample Collection by Phlebotomist
Sample Collection by Phlebotomist
Reporting of the sample at lab
Reporting of the sample at lab
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Download Reports
Frequently Asked Questions

No particular preparations are necessary before the test. However, it's advisable to inform your healthcare provider about any medications or supplements you're currently taking, as certain substances may occasionally interfere with test results.

The FISH test is usually recommended during pregnancy if initial screening tests suggest a high risk of Trisomy 16. It may also be performed after birth if the child exhibits symptoms characteristic of this condition.

The FISH test can reveal if there is an extra copy of chromosome 16 in the cells, indicating Trisomy 16. Additionally, the test can help identify other chromosomal anomalies.

The frequency of the FISH test is typically determined by the individual's risk factors and their healthcare provider's advice. If you're pregnant and at an elevated risk due to factors like age, family history, or unusual initial screening results, your doctor might suggest you undergo this test.

Typically, individuals possess two copies of each chromosome. A third copy of chromosome 16 signifies Trisomy 16.

No specific precautions are required for the FISH test. However, it's vital to adhere to your healthcare provider's instructions and advice before and after any medical procedure to ensure optimal results and your overall health.

The outcomes of a FISH test are generally not influenced by external factors since chromosomal abnormalities are genetic. However, technical aspects, like the quality of the sample or errors during the lab process, might potentially affect the test results.

If the test results show an abnormality, it's crucial to consult with a genetic counselor or a medical geneticist. These professionals are adept at guiding individuals and families about the implications of genetic disorders and can provide expert advice on possible treatments and management strategies for these conditions.

The FISH test is a critical diagnostic tool in identifying chromosomal abnormalities such as Trisomy 16. Its accuracy, combined with its simplicity and lack of specific preparation requirements, makes it a highly beneficial and practical tool for those at risk. However, any understanding of these results should be under the guidance of healthcare professionals to ensure a comprehensive interpretation of the findings.

FISH for Trisomy 16
₹ 3900
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