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Lab Test

Fragile X Chromosome Analysis (G Banding)

Fragile X Chromosome Analysis (G Banding)

Fragile X Chromosome Analysis, also known as karyotyping or G Banding, is a test conducted to identify any genetic abnormalities in the X chromosome, especially those associated with Fragile X Syndrome (FXS). FXS is a genetic disorder leading to intellectual disability, behavioral and learning challenges, as well as distinct physical characteristics. It is recognized as the most common known single-gene cause of autism and inherited intellectual disability.

  • Test NameFragile X Chromosome Analysis (G Banding)
  • Sample TypeBlood
  • Preparations RequiredThere are no specific instructions for this test. However, your doctor will guide you if any special preparation is required.
  • Report Time28 days

The G Banding technique is utilized in this analysis, which involves staining the chromosomes with a dye that forms a distinct pattern of light and dark bands. By observing these bands, it's possible to identify certain abnormalities, including changes in the number or structure of chromosomes. The test specifically seeks to identify a constriction at the end of the X chromosome, indicative of Fragile X Syndrome.

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

The test is critical for diagnosing Fragile X Syndrome, and understanding the risk of an individual passing the condition onto their offspring. It aids in formulating suitable treatment and management strategies.

No, fasting is not necessary for the Fragile X Chromosome Analysis.

There is no specific preparation required for this test. A simple blood draw is involved.

It is typically conducted when a child shows symptoms of Fragile X Syndrome, such as developmental delays, learning disabilities, or certain behavioral issues. It can also be recommended for individuals with a family history of FXS or unexplained intellectual disabilities.

The test identifies any abnormalities in the structure or number of chromosomes, specifically seeking constrictions at the end of the X chromosome, which is a characteristic of Fragile X Syndrome.

This is usually a one-time test, conducted for diagnostic purposes.

Since the test involves a blood draw, there could be minimal discomfort, bruising, or risk of infection at the injection site.

The results of this test are genetic, hence not typically affected by lifestyle or environmental factors. However, errors, although rare, can occur in the lab.

If the Fragile X Chromosome Analysis shows abnormal results, it would be advisable to consult a genetic counselor or a medical geneticist.

Symptoms vary but can include intellectual disability, behavioral and learning challenges, anxiety, ADHD, and features of autism. Physical features might include a long face, large ears, and flat feet.

No, the test results are not affected by medications as it's a genetic test.

While there's no cure for Fragile X Syndrome, treatments can improve symptoms and include educational therapy, behavioral therapy, and medication.

Complications include learning disabilities, behavioral issues, anxiety, ADHD, and a higher chance of autism. Physical complications might involve heart issues and connective tissue complications.

There is no cure for Fragile X Syndrome but treatments can often help improve the symptoms and the quality of life.

Yes, a positive result usually indicates that your child has Fragile X Syndrome. However, the degree of symptoms can greatly differ between individuals.

The Fragile X Chromosome Analysis (G Banding) plays a crucial role in diagnosing Fragile X Syndrome and in the early implementation of interventions and therapies to improve the quality of life of those affected. Always discuss the results with your doctor, who can provide guidance on the next steps based on the findings.

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