Which lab tests are performed in the workup of mycobacterium chelonae infection?

Updated: Dec 20, 2018
  • Author: Alfred Scott Lea, MD; Chief Editor: Michael Stuart Bronze, MD  more...
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Answer

If M chelonae,Mycobacterium abscessus or any rapidly growing mycobacteria (RGM)infection is discovered, additional testing for underlying disease may be needed. Speciation points to the clinical sequelae that can be anticipated.

An HIV test may be warranted, especially if disseminated disease with any NTM is diagnosed without an obvious underlying condition.

Sweat chloride and/or genetic screening for cystic fibrosis may be warranted if lung infection is found not only in a relatively young patient, but also in older patients with evidence of bronchiectasis.

A purified protein derivative (PPD) of tuberculin test should be considered to assist in ruling out tuberculosis. Similarly, interferon-gamma release assays (IGRA) may help identify a true Mycobacterium tuberculosis infection.


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