ARUP's Laboratory Test Directory

Mycobacterium tuberculosis Amplified Detection , CSF : 0060063

Mnemonic: MC MTDCSF

Methodology: Transcription Mediated Amplification (Gen-Probe®)
Performed: Mon, Wed, Fri
Reported: 1-4 days
Specimen Required: Collect:  CSF.

Transport:  1 mL CSF at 2-8°C. (Min: 0.5 mL) Also acceptable: frozen.

Submit specimen according to Biological Substance, Category B, shipping guidelines.

Pediatric Collection/Transport:  

Submit specimen according to Biological Substance, Category B, shipping guidelines.

Unacceptable Conditions:  Bloody samples.

Stability:  Ambient: Unacceptable; Refrigerated: 3 days; Frozen: 1 week
Reference Interval:
Negative
Interpretive Data: This test is not FDA approved for specimens other than respiratory sources; however, this assay was validated at ARUP Laboratories for nonbloody CSF specimens.

The MTD test is specific for, but does not differentiate among members of the M. tuberculosis complex. M. celatum and M. terrae-like organisms will cross react if present at concentrations higher than 30 CFU/test. However, those species are rare clinical isolates. Specimens with high levels of nontuberculosis mycobacteria (greater than 1,000,000 cells/test) may cause low level positive MTD results when M. tuberculosis complex is not present.
CPT Code(s): 87556
 
 

 

 

 
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