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Nontuberculous Mycobacteria

Nontuberculous Mycobacteria

Nontuberculous Mycobacteria


Water is recognized as a major source of Nontuberculous Mycobacteria (NTM) species responsible for opportunistic infections in humans. These bacteria usually affect individuals with pre-existing conditions, specifically, lung disease, immunosuppression, transplantation and HIV infection. The most common infections are pneumonia and gastrointestinal disease caused by M. avium and M. intracellulare. Non-immunosuppressed individuals can also acquire NTM infections, most commonly, catheter sepsis, surgical and posttraumatic wound infections and cervical lymphadenitis in children. Types of water that may be tested include potable hot water systems where high risk patients are housed, spas and hot tubs.

Test Method
Filter concentration and decontamination with 0.2 M KCL-HCL, pH 2.2. Cultivation using Middlebrook 7H10, Mitchison 7H11, and Rapid Growth Medium (RGM), incubation at 30°C for 6 weeks.

Turn Around Time
6–8 weeks

Test Code

Sample Transport
See Sampling and Shipping page for instructions.

Accreditations and Proficiency
See Accreditations and Proficiency page for information on our accreditations and Legionella testing proficiency programs.