Mycobacteirum Tuberculosis DNA - WB-EDTA
Also Known As
Test Parameters Included
- Mycobacterium tuberculosis DNA detection (Qualitative PCR - Positive/Negative)
- Pathologist Molecular Biology Remark - correlated with clinical TB presentation and disease status
Department
Methodology
Sample Required
Preparation
Schedule Report
24 hours
Emergency Report
Yes
Frequently Asked Questions
What does the Mycobacterium tuberculosis DNA - WB-EDTA test detect?
This PCR-based molecular test detects the genetic material of Mycobacterium tuberculosis in whole blood collected in an EDTA tube, helping diagnose active TB infection at the microbial level.
Is fasting required for this test?
No, fasting is not required for the MTB DNA PCR test. The sample can be collected at any time of day.
How is the sample collected for this test?
A venous blood sample is drawn into an EDTA (purple-top) tube, typically 3 mL volume, and sent to the molecular biology laboratory for DNA extraction and PCR amplification.
What is the turnaround time for MTB DNA PCR results?
Results are typically available within 24–48 hours, depending on laboratory workload and sample processing schedule.
What does a positive MTB DNA PCR result mean?
A positive result indicates the presence of Mycobacterium tuberculosis DNA in the blood sample, suggesting active TB infection. Clinical correlation with symptoms, imaging, and other investigations is essential for definitive diagnosis and treatment planning.
Can this test distinguish between active and latent TB?
PCR detects bacterial DNA and confirms the presence of MTB organisms but cannot differentiate between active and latent infection on its own. Clinical assessment and additional tests are needed to determine disease activity.
Test Description
Test Code
M26
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