MTB DNA PCR (MISCELLANEOUS)
Also Known As
Test Parameters Included
- Mycobacterium tuberculosis DNA Detection (Qualitative PCR Result) - positive/negative with cycle threshold value
- Pathologist Molecular Diagnostics Remark - interpreted against clinical presentation and sample adequacy criteria
Department
Methodology
Sample Required
Preparation
Schedule Report
24 hours
Emergency Report
Yes
Frequently Asked Questions
What sample types are accepted for MTB DNA PCR?
The test accepts sputum, bronchoalveolar lavage, tissue biopsies, CSF, pleural fluid, and other sterile body fluids. Each sample type requires specific collection containers and transport media.
Is fasting required before this test?
No, fasting is not required for MTB DNA PCR as it detects bacterial DNA, not metabolic analytes affected by food intake.
How long does it take to get results?
Report turnaround time is 24-48 hours from sample receipt at our Chhatrapati Sambhajinagar laboratory, depending on sample volume and PCR batch scheduling.
What does a positive MTB DNA PCR result mean?
A positive result indicates detection of Mycobacterium tuberculosis genetic material, confirming active TB infection. Clinical correlation with symptoms and imaging is essential for treatment initiation.
Can medications affect PCR results?
Antitubercular drugs started before sample collection may reduce bacterial DNA load and cause false-negative results. Inform your physician about current medications before testing.
How accurate is this molecular test compared to culture?
MTB DNA PCR offers rapid detection within hours versus 2-8 weeks for culture, with high specificity. Sensitivity varies by sample type and bacterial load, so negative PCR does not completely exclude TB.
Test Description
Test Code
M27
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