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HelpTest Code MTMOL Molecular Detection of Mycobacterium tuberculosis
Laboratory Code
LAB2100
Specimen Requirements
Submit only one of the following
Specimen Type: Respiratory aspirates, fresh tissues, biopsies and body fluids
Container/Tube: Sterile, screw-capped container
Volume: 5.0 mL (fluids, aspirates); 5.0 g (tissues)
Minimum Volume: 1.0 mL (fluids, aspirates); 2.0 g (tissues)
Collection Instructions: Collect aseptically into a sterile container.
Specimen Type: Whole blood or Bone marrow
Container/Tube: Lavender Top (EDTA)
Volume: 3.0 mL
Minimum Volume: 1.0 mL
Specimen Type: CSF and Stool specimens – consult with NUH Microbiologist before sending.
Specimen Stability
Preferred temperatures for storage prior to and during shipping to NUH
| Specimen Type | All types |
|---|---|
| Ambient | Submit to lab as soon as possible |
| Refrigerate | 24 hours |
| Frozen | Do not freeze sample |
Methodology
Real-time Polymerase Chain Reaction
Days and Times Performed
Monday through Saturday, TAT 1 - 2 days
Reference Interval
Negative for Mycobacterium tuberculosis Complex.
Critical Values: Clinician will be informed of positive result.
Testing Laboratory
National University Hospital
Clinical Microbiology, 67724343
Useful For
Rapid molecular diagnosis of Mycobacterium tuberculosis infection
Service Code
23601
LOINC Code Information
Not applicable.
Update
Last updated 21/3/2025
Unacceptable Condition
1) Hard bone specimen
2) Swab specimens- These have low amounts of material
3) For NUH patients with previously reported positive MTMOL results sent within 2 weeks, sample will be rejected.