MTB DNA PCR (PLEURAL FLUID) Mycobacterium Tuberculosis
Also Known As
Test Parameters Included
- Mycobacterium tuberculosis DNA detected in pleural fluid by PCR (qualitative)
- Pathologist Molecular Microbiology Remark — correlated with clinical and radiological findings of tuberculous pleuritis
Department
Methodology
Sample Required
Preparation
Schedule Report
24 hours
Emergency Report
Yes
Frequently Asked Questions
What does MTB DNA PCR in pleural fluid detect?
It detects the genetic material of Mycobacterium tuberculosis in pleural fluid, enabling rapid diagnosis of tuberculous pleuritis even when conventional smear microscopy is negative.
Why is PCR preferred over smear for pleural fluid TB?
Pleural fluid contains very few bacilli, making smear microscopy insensitive. PCR can detect as few as 10 copies of MTB DNA, offering significantly higher sensitivity and faster turnaround.
Is fasting required for this test?
No, fasting is not required. Pleural fluid is obtained via thoracentesis by a clinician, independent of food intake.
How is the pleural fluid sample collected?
A doctor collects pleural fluid using needle aspiration (thoracentesis) under ultrasound guidance. Minimum 5 ml of fluid is required in a sterile container.
What does a positive MTB PCR result mean?
A positive result indicates the presence of Mycobacterium tuberculosis DNA in the pleural fluid, strongly supporting a diagnosis of tuberculous pleuritis. Clinical correlation and initiation of anti-TB therapy should follow.
How long does it take to get the report?
Reports are typically available within 24–48 hours. Verified PDF reports can be accessed via www.drpatholab.in or WhatsApp/Email.
Test Description
Test Code
M20
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