RELIABILITY OF QUANTIFICATION OF CANDIDA SPECIES COLONIES USING ALTERNATIVE PLATING METHODS
Resumo
Objective: to evaluate the concordance of different plating methods for quantification of Candida species colonies. Method: standardized suspensions of reference strains (Candida albicans, Candida glabrata, Candida tropicalis and Candida krusei) were submitted to serial dilution and plating according to methods of track-dilution (TDM), drop plate (DPM) and the conventional spread plate (SPM). Data were submitted to construction of Bland–Altman diagrams, Intraclass Correlation Coefficient (ICC) and ANOVA (⍺=5%). Results: adequate concordance between the methods (CCI >0.71) was observed, and the execution of DPM was the fastest (p<0.001). However, DPM and TDM appear to result in greater values compared to SPM, especially for C. tropicalis and C. krusei. Conclusion: C. albicans and C. glabrata can be plated with DPM and TDM, but the use of these methods for C. krusei and C. tropicalis may result in count variation.
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Referências
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DOI: https://doi.org/10.26694/repis.v6i0.9426
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