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. 2007 Oct;73(19):6296-8.
doi: 10.1128/AEM.00325-07. Epub 2007 Aug 3.

Use of a disposable water filter for prevention of false-positive results due to nontuberculosis mycobacteria in a clinical laboratory performing routine acid-fast staining for tuberculosis

Hui-Zin Tu  1 , Chiao-Shan Chen, Tsi-Shu Huang, Wen-Kuei Huang, Yao-Shen Chen, Yung-Ching Liu, Yusen Eason Lin
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Use of a disposable water filter for prevention of false-positive results due to nontuberculosis mycobacteria in a clinical laboratory performing routine acid-fast staining for tuberculosis

Hui-Zin Tu et al. Appl Environ Microbiol. 2007 Oct.

Abstract

A point-of-use 0.2-microm filter was evaluated for elimination of nontuberculosis mycobacteria in laboratory water to reduce false-positive acid-fast bacillus staining results. Use of the point-of-use filter can significantly reduce the false-positive rate to 1.2% compared to samples treated with tap water (10.7%) and deionized water (8.7%).

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Figures

FIG. 1.
FIG. 1.
A point-of-use water filter attached to the water outlet for acid-fast staining procedures.
See this image and copyright information in PMC

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