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False-positive QuantiFERON TB-Gold test due to Mycobacterium gordonae
Kiran Gajurel1, Aruna K Subramanian1
1Division of Infectious Diseases, Stanford University School of Medicine, Stanford, CA 94305.
Diagnostic Microbiology and Infectious Disease
|February 1, 2016
Abstract:
We report a case of QuantiFERON TB-Gold conversion associated to Mycobacterium gordonae in an elderly male from an assisted living facility without known risk factors for tuberculosis. This knowledge of environmental mycobacteria causing positive quantiferon assays is important to avoid unnecessary treatment of false-positive latent tuberculosis, especially in the absence of well-established positive predictive value of quantiferon conversion.
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