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Lab Test Dictionary

Customized Phenotypic Susceptibilities (NTM3/NTM5/MTB6)

Performing Lab

National Jewish Health (NJH) Mycobacteriology

Epic ID


Lab Test Days


Collection Information

Specimen Required

An identified isolate is required for testing (does not necessarily apply to veterinary rapidly growing isolates). Specimen Volume: Laboratory must receive visible growth of an isolate on solid media or an isolate in broth media (≥ 3 mL).

Container Type


Processing Information - Lab Use Only

Transport Temperature

Room Temp Only

Rejection Criteria

Cultures received with incomplete identifiers; Mixed cultures; Note that prior to rejection, attempts will be made to isolate organisms; A re-isolation charge will be applied in these cases; Cultures containing mold; Solid media with insufficient growth; Cultures submitted on agar plates; Liquid media with < 2 mL; Leaking specimens

Processing Instructions

Complete a NJH Mycobacteriology requisition form and submit with specimen room temp Monday-Friday, no weekends or holidays. Source, organism and susceptibilities are required.

Included Tests

Slowly growing mycobacteria (Test code: NTM3): Amikacin, Azithromycin, Ciprofloxacin, Clofazimine, Clarithromycin, Doxycycline, Ethambutol, Ethionamide, Kanamycin, Levofloxacin, Linezolid, Minocycline, Moxifloxacin, Ofloxacin, Rifabutin, Rifampin, Rifampin/Ethambutol Synergy, Streptomycin and Trimethoprim-sulfamethoxazole. Rapidly growing mycobacteria (Test code: NTM5): Amikacin, Augmentin, Azithromycin, Cefepime, Cefotaxime, Cefoxitin, Ceftriaxone, Ciprofloxacin, Clarithromycin, Clofazimine, Clofazimine-Amikacin Synergy, Doxycycline, Gentamicin, Imipenem, Kanamycin, Linezolid, Minocycline, Omadacycline, Moxifloxacin, Tigecycline, Tobramycin, Trimethoprim-sulfamethoxazole. Mycobacterium tuberculosis (Test code: MTB6): Amikacin, Azithromycin, Capreomycin, Ciprofloxacin, Clofazimine, Clarithromycin, Cycloserine, Ethambutol, Ethionamide, Isoniazid, Kanamycin, Linezolid, Levofloxacin, Moxifloxacin, Ofloxacin, p-Aminosalicyclic acid, Pyrazinamide, Pyrazinamide (MIC), Rifabutin, Rifampin, Streptomycin. M. haemophilum and M. shimoidei (Test code: NTM3): Amikacin, Ciprofloxacin, Clarithromycin, Clofazimine, Ethambutol, Linezolid, Moxifloxacin, Rifabutin, Rifampin, Streptomycin.

CPT Codes

NMT3: 87186 (x2), 87188, 87181; ntm5: 87186; MTB6 87190, 87188 (x)