Improved laboratory safety by decontamination of unstained sputum smears for acid-fast microscopy.

Abstract:

:Tubercle bacilli may survive in unstained heat-fixed sputum smears and may be an infection risk to laboratory staff. We compared the effectiveness of 1% and 5% sodium hypochlorite, 5% phenol, 2% glutaraldehyde, and 3.7% formalin in killing Mycobacterium tuberculosis present in smears prepared from 51 sputum samples. The smears were decontaminated by the tube and slide techniques. Phenol at 5%, glutaraldehyde at 2%, and buffered formalin at 3.7% for 1 min (tube technique) or for 10 min (slide technique) were effective in decontaminating sputum smears and preserved cell morphology and quantitative acid-fast microscopy results.

journal_name

J Clin Microbiol

authors

Giacomelli LR,Helbel C,Ogassawara RL,Barreto AM,Martins FM,Cardoso CL,Leite CQ

doi

10.1128/JCM.43.8.4245-4248.2005

subject

Has Abstract

pub_date

2005-08-01 00:00:00

pages

4245-8

issue

8

eissn

0095-1137

issn

1098-660X

pii

43/8/4245

journal_volume

43

pub_type

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