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Available Tests

  • Mycobacterium tuberculosis complex NAAT

Mycobacterium tuberculosis complex NAAT

Test ID



EPIC Order   Lab Orderable Only: See Important Comments
CPT Codes   87556
Laboratory   Molecular Microbiology
Group/Individual Test   Individual
Tube Station   82
Specimen Routine: Smear Positive respiratory samples. See important Comments .
Availability Routine: Performed in Molecular Microbiology Laboratory; Daily, Monday-Friday
  STAT: Director Approval Only
Turnaround Time   24 hrs from positive smear result

Only first-time or new episode smear-positive respiratory samples will be tested automatically.  

Testing of smear positive extra-pulmonary specimens and smear-negative respiratory specimens will be performed by physician request only (Call Special Microbiology, 984-974-1830.  Not available on stool or grossly bloody samples.

The sensitivity of smear-positive respiratory specimens is 98-100% while the sensitivity of smear-negative respiratory specimens is 70-72%.  Specificity of respiratory specimens is 99-100%.

Reviewed by jcayless on November 27, 2019

Note: Reference ranges provided on this web site are for guidance only, and may not reflect the most recent changes. Refer to laboratory reports for current reference data.

UNC Hospitals
McLendon Clinical Laboratories
101 Manning Drive
Chapel Hill, NC 27514