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Updated: May 20, 2026

Quality-Controlled Sputum Analysis by Flow Cytometry
Published on: August 9, 2021
Fate of sputum samples transported in bottles containing cetylpyridinium chloride and sodium chloride: a national
Potharaju Visalakshi1, Sandeep K Meharwal, Jyoti Arora
1Department of Microbiology, Lala Ram Sarup Institute of TB and Respiratory Diseases, New Delhi.
Abstract:
The transportation of sputum samples may sometimes take more than one week which results in an increased contamination rate and loss of positive cultures. The current study was planned to analyze the recovery rate of mycobacteria from transported samples with and without Cetylpyridinium chloride (CPC). Addition of CPC is useful for isolation of M. tuberculosis from sputum subjected to long-term storage.
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