MTB DNA PCR (CSF)
Also Known As
Test Parameters Included
- Mycobacterium tuberculosis DNA Concentration (copies/mL) - qualitative/quantitative PCR detection
- Pathologist Microbiology Remark - correlated with clinical suspicion of tuberculous meningitis
Department
Methodology
Sample Required
Preparation
Schedule Report
24 hours
Emergency Report
Yes
Frequently Asked Questions
What does MTB DNA PCR in CSF detect?
It detects Mycobacterium tuberculosis genetic material in cerebrospinal fluid, enabling early diagnosis of tuberculous meningitis before culture results are available.
How is the CSF sample collected?
CSF is obtained through lumbar puncture by a trained physician. A minimum of 1 mL is required and sent promptly to the molecular biology lab.
How long does it take to get results?
Results are typically available within 24 hours. Turnaround time may vary depending on sample volume and lab workload.
Is this test better than CSF culture for TB meningitis?
PCR is significantly faster and more sensitive than conventional culture, which can take 2–8 weeks. However, a negative PCR does not completely rule out TB meningitis, and clinical correlation is essential.
Can medications affect the PCR result?
Prior anti-TB or antibiotic therapy may reduce bacterial DNA load and cause false-negative results. Inform the physician about any ongoing treatment.
Where can I get this test done in Chhatrapati Sambhajinagar?
Dr. Patho Labs & Diagnostics, an NABL ISO accredited pathology lab in Chhatrapati Sambhajinagar, Maharashtra, offers MTB DNA PCR on CSF with verified PDF reports available online.
Test Description
Test Code
M18
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