Analytic Time

12 - 35 days

Soft Order Code

Test Updated:


Mycobacteria, Antibiotic Susceptibility
Susceptibility Testing, Mycobacterium avium complex
Susceptibility Testing, Slow-Growing Mycobacteria
Susceptibility Testing, AFB
Susceptibility Testing, Mycobacterium marinum
Susceptibility Testing, Mycobacterium kansasii
Antimicrobial Susceptibility, Acid-Fast Bacilli, Slowly Growing

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Find a Requisition

All specimens should be accompanied by a requisition.

Submitting Specimens

Learn about how to properly label and where to ship specimens.

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MLabs provides all the supplies necessary for the collection of specimens.

Test FAQ

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Test Overview

Test Methodology

Minimum Inhibitory Concentration (MIC) by Microtiter Broth Dilution Method

Test Usage

Determination of resistance of slowly growing mycobacteria to antimicrobial agents.

Reference Range

Results are reported as the minimum inhibitory concentration in micrograms/mL.

* Reference ranges may change over time. Please refer to the original patient report when evaluating results.

Specimen Requirements

Collection Offsite

Test performed on isolated organism in pure culture. Send mycobacterium on Middlebrook 7-H10 agar slant; agar plates are not acceptable. Place sealed agar slant inside clear, liquid tight SAF-T-PAK bag and seal tape liner. Place sealed bag and requisition inside white biohazard SAF-T-PAK envelope and seal. Transport at room temperature. Include antimicrobial(s), culture site, and suspected organism identification on requisition.

Minimum Volume

Billing Information

CPT Code
Pro Fee Code

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Our High Standard

Quality that sets us apart

As the reference laboratory division of Michigan Medicine's Department of Pathology, MLabs shares the institution's commitment to applying established quality principles to clinical laboratory testing. Like other large organizations in complex, consequential fields, we rely on an established approach to monitor quality throughout the testing process.