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Lab Test

FISH for Trisomy 18

Fluorescence in situ Hybridization, often abbreviated as the FISH test, is a key type of genetic test that is utilized to identify and map the genetic material present within an individual's cells. This test is especially useful when it comes to identifying unique traits in DNA, such as the presence of an extra chromosome which is indicative of conditions like Trisomy 18.

  • Profile Name: FISH for Trisomy 18
  • Sample Type: Blood
  • Preparations Required: No specific preparations necessary for this test.
  • Report Time: 5 days

Trisomy is a condition characterized by the presence of an additional chromosome in some or all of the cells of the body. Specifically, Trisomy 18, also known as Edwards syndrome, is a severe genetic disorder caused by the presence of an extra 18th chromosome.

The FISH test employs fluorescent probes that bind to parts of the chromosome that have a high degree of sequence similarity. This allows for the visualization of specific areas in the genome, thereby aiding in the detection of structural and numerical abnormalities in chromosomes. For conditions like Trisomy 18, early detection is crucial in managing the condition and preparing for potential health complications.

Home Sample Collection Process

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

The FISH test is pivotal in diagnosing Trisomy 18 as it facilitates the early and accurate detection of this chromosomal abnormality. Prompt diagnosis allows for the appropriate management of the condition, which can greatly improve the quality of life for the individual affected and their family.

No, fasting is not required prior to a FISH test. Individuals can maintain their normal eating and drinking habits before undergoing this diagnostic procedure.

There are no specific preparations required for this test. Nonetheless, it's always recommended to inform your healthcare provider about any medications or supplements you are currently taking, as certain substances might occasionally interfere with test results.

The FISH test is typically performed during pregnancy if the initial screening tests indicate a high risk of Trisomy 18. It may also be done after birth if the child displays symptoms associated with this condition.

The FISH test can determine if there is an extra copy of chromosome 18 in the cells, thereby indicating Trisomy 18. Besides, it can also help identify other chromosomal abnormalities.

The frequency of undergoing the FISH test is usually determined based on the individual's risk factors and the recommendations of the healthcare provider. If you are pregnant and at an increased risk due to factors such as age, family history, or abnormal initial screening results, your doctor may suggest this test.

Normally, individuals have two copies of each chromosome. The presence of a third copy of chromosome 18 indicates Trisomy 18.

No specific precautions are necessary for the FISH test. However, it's essential to follow your healthcare provider's instructions before and after any medical procedure to ensure accurate results and overall well-being.

The results of the FISH test are generally not influenced by external factors, as chromosomal abnormalities are genetic. However, certain technical elements, such as the quality of the sample or errors during the laboratory process, might potentially affect the test results.

If the test results indicate an abnormality, it's crucial to consult with a medical geneticist or genetic counselor. These professionals are well-trained to guide individuals and families about the implications of genetic disorders and can provide expert advice on potential treatments and management strategies.

To summarize, the FISH test is a critical tool in diagnosing chromosomal abnormalities like Trisomy 18. Its accuracy and simplicity, combined with the lack of specific preparation requirements, make it a highly beneficial tool for those at risk. However, understanding these results should always be guided by healthcare professionals to ensure a comprehensive interpretation of the findings. Early detection through the FISH test can lead to more effective management strategies and, in turn, a better quality of life for those affected by conditions like Trisomy 18.

FISH for Trisomy 18
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Locations Near You in Hyderabad
  • 4KM from Madhapur
  • 3KM from Banjara Hills
  • 1.9KM from Yusufguda
  • 3KM from Madhura Nagar
  • 5KM from Shaikpet