1P & 19 Q

1P & 19Q Test

The 1P & 19Q Test is a specialized molecular pathology and genetic diagnostic test used to detect co-deletion of chromosome arms 1p and 19q in tumor cells. This test is commonly performed for patients suspected of having certain types of brain tumors, especially oligodendrogliomas.

The presence of 1p/19q co-deletion is an important genetic marker used to classify brain tumors, determine prognosis, and guide treatment planning. Patients whose tumors show this co-deletion often respond better to chemotherapy and radiation therapy and generally have a better clinical outcome compared to patients without the deletion.

This test is typically performed on tumor tissue obtained through biopsy or surgery and is considered an essential part of modern neuro-oncology diagnosis.

Benefits of the Test

• Helps classify brain tumors accurately
• Supports precise diagnosis of oligodendroglioma
• Assists in treatment planning
• Helps predict treatment response
• Supports prognosis assessment
• Enables personalized cancer care

Why Doctors Recommend This Test

Doctors commonly recommend the 1P & 19Q Test when:

• Brain tumor is suspected
• Oligodendroglioma diagnosis needs confirmation
• Histopathology suggests glial tumor
• Treatment planning requires molecular profiling
• Predicting chemotherapy response
• Determining long-term prognosis
• Advanced neuro-oncology evaluation is needed
• Monitoring brain tumor management

This test provides valuable genetic information that helps specialists make evidence-based treatment decisions.

Preparation Before the Test

Preparation usually includes:

• No special patient preparation is required
• Tumor tissue sample is collected through biopsy or surgery
• Histopathology review may be required
• Inform your doctor about previous pathology reports
• Follow specialist instructions carefully

No fasting is required.

Normal Reporting Time

The normal reporting time for the 1P & 19Q Test is usually 5–10 working days, depending on molecular pathology processing.

Who Should Take This Test?

This test is recommended for:

• Patients with suspected oligodendroglioma
• Individuals undergoing brain tumor evaluation
• Patients requiring molecular tumor classification
• Patients planning chemotherapy or radiotherapy
• Individuals under neuro-oncology care
• Patients needing advanced tumor prognosis analysis

At Focus Diagnostics Hyderabad, advanced molecular diagnostic technology and expert pathology specialists ensure highly accurate 1P & 19Q genetic testing reports for reliable diagnosis and personalized cancer treatment planning.