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Medical Laboratories

Precise Brain Tumor Molecular Diagnosis

FISH for Oligodendroglioma 1p/19q Deletion

An advanced genetic test used to classify brain tumors accurately, helping clinicians determine the most effective treatment plan and predict the tumor's response to therapy.

Trusted medical contentUpdated: 10-11-2026Views: 0LHL-6580

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Service typeGenetic laboratory test

Duration7-10 working days

Fasting / preparationFasting is not required

Home serviceNot available

Medical notice: this information is for education and service understanding. It is not a diagnosis or a recommendation for an unnecessary procedure.

About this service

A laboratory test using FISH technology to detect the co-deletion of chromosome arms 1p and 19q. It is essential for diagnosing oligodendrogliomas and guiding clinical management.

Clinical Significance

Used to confirm the diagnosis of oligodendrogliomas.
Helps differentiate between brain tumor types with similar microscopic features.
Serves as a critical marker for predicting chemosensitivity.

Indications for Testing

During the initial diagnosis of adult primary brain tumors.
To determine the most appropriate treatment protocol (radiation vs. chemo).
To evaluate the long-term prognosis of the disease.

Understanding Results

The presence of 1p/19q co-deletion supports an oligodendroglioma diagnosis.
Patients with this co-deletion typically show better treatment outcomes.
Absence of the deletion may lead to different therapeutic strategies.

What is included?

✓FISH Genetic Analysis
✓Molecular Pathology Consultant Report

Conditions and notices

Fasting is not required
Requires a tissue sample (paraffin block) from the tumor biopsy

Frequently Asked Questions

Short answers to the FAQs published with this service.

• What is the 1p/19q FISH test?

It is a genetic test that looks for the loss of specific chromosome parts (1p and 19q) in brain tumor cells to accurately classify the tumor.

• Why do doctors order this test for brain tumors?

It is ordered to confirm a diagnosis of oligodendroglioma and to predict how well the patient might respond to chemotherapy and radiation.

• Is fasting required for this test?

No, fasting is not required because the test is performed on a previously collected tissue sample (biopsy).

• How is the sample collected?

The test is performed on a tissue sample (paraffin block) stored in the lab following a previous brain surgery or biopsy.

• How long does it take to get results?

Results usually take 7 to 10 working days due to the complex nature of the genetic analysis.

• Can this test be performed at home?

No, this test requires specialized laboratory equipment and a tumor tissue sample, so it cannot be performed as a home service.

Service resources and references

References and additional resources

Reference material and files associated with this service when available.

Scientific references

WHO Classification of Tumours of the Central Nervous System

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Important Notice:

Content on LahaLak is provided for educational purposes only. It is not a medical diagnosis, prescription, or substitute for consulting a qualified clinician. Medical decisions should not be made from this content alone.

Content reviewed according to the LahaLak Quality Charter.Editorial Policy & Medical Standards

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Medical Laboratories

Precise Brain Tumor Molecular Diagnosis

FISH for Oligodendroglioma 1p/19q Deletion

An advanced genetic test used to classify brain tumors accurately, helping clinicians determine the most effective treatment plan and predict the tumor's response to therapy.

Trusted medical contentUpdated: 10-11-2026Views: 0LHL-6580

View service availability

Service typeGenetic laboratory test

Duration7-10 working days

Fasting / preparationFasting is not required

Home serviceNot available

Medical notice: this information is for education and service understanding. It is not a diagnosis or a recommendation for an unnecessary procedure.

About this service

A laboratory test using FISH technology to detect the co-deletion of chromosome arms 1p and 19q. It is essential for diagnosing oligodendrogliomas and guiding clinical management.

Clinical Significance

Used to confirm the diagnosis of oligodendrogliomas.
Helps differentiate between brain tumor types with similar microscopic features.
Serves as a critical marker for predicting chemosensitivity.

Indications for Testing

During the initial diagnosis of adult primary brain tumors.
To determine the most appropriate treatment protocol (radiation vs. chemo).
To evaluate the long-term prognosis of the disease.

Understanding Results

The presence of 1p/19q co-deletion supports an oligodendroglioma diagnosis.
Patients with this co-deletion typically show better treatment outcomes.
Absence of the deletion may lead to different therapeutic strategies.

What is included?

✓FISH Genetic Analysis
✓Molecular Pathology Consultant Report

Conditions and notices

Fasting is not required
Requires a tissue sample (paraffin block) from the tumor biopsy

Frequently Asked Questions

Short answers to the FAQs published with this service.

• What is the 1p/19q FISH test?

It is a genetic test that looks for the loss of specific chromosome parts (1p and 19q) in brain tumor cells to accurately classify the tumor.

• Why do doctors order this test for brain tumors?

It is ordered to confirm a diagnosis of oligodendroglioma and to predict how well the patient might respond to chemotherapy and radiation.

• Is fasting required for this test?

No, fasting is not required because the test is performed on a previously collected tissue sample (biopsy).

• How is the sample collected?

The test is performed on a tissue sample (paraffin block) stored in the lab following a previous brain surgery or biopsy.

• How long does it take to get results?

Results usually take 7 to 10 working days due to the complex nature of the genetic analysis.

• Can this test be performed at home?

No, this test requires specialized laboratory equipment and a tumor tissue sample, so it cannot be performed as a home service.

Service resources and references

References and additional resources

Reference material and files associated with this service when available.

Scientific references

WHO Classification of Tumours of the Central Nervous System

Service availability

Choose a provider and branch

Each provider has one service price, then you choose from its available branches.

Labeeb & Search Tools

Let us help you

Use Labeeb smart tools to understand reports related to (Medical Laboratories), or search the platform directory directly.

Browse services alphabetically A-Z

LahaLak is here to help

Didn’t find the service?

We can help request the service and prepare your inquiry, or you can ask Labeeb to guide you to the most suitable category or service.

Phone call

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Your opinion matters

Was this content helpful?

Have a note?

Important Notice:

Content reviewed according to the LahaLak Quality Charter.Editorial Policy & Medical Standards

View service availability