Results of the trehalase maltase test for the identification of Candida glabrata in comparison with the conventional method, obtained in four laboratories with strains isolated on three chromogenic media
| Number of isolates yielding a positive trehalase maltase test (number of strains tested) | |||||
|---|---|---|---|---|---|
| All laboratories | Laboratory A | Laboratory B | Laboratory C | Laboratory D | |
| Species | All media | Candida ID (bioMerieux) | CHROMagar Candida (Becton Dickinson) | Albicans ID 2 (bioMerieux) | Albicans ID 2 (bioMerieux) |
| *Candida parapsilosis (n=1), C tropicalis (n=5), C kefyr (n=1), C sphaerica (n=1); †C parapsilosis (n=1); ‡C tropicalis (n=1). | |||||
| CI, confidence interval. | |||||
| Candida glabrata | 550 (572) | 288 (303) | 130 (136) | 68 (68) | 64 (65) |
| Other yeasts | 361 (372) | 8* (210) | 1† (53) | 1‡ (53) | 1‡ (56) |
| Sensitivity (95% CI) | 96.2% | 95.0% (91.8% to 97.1%) | 95.6% (90.6% to 98.4%) | 100% (94.7% to 100%) | 98.5% (91.7% to 100%) |
| Specificity (95% CI) | 96.8% | 96.2% (92.6% to 98.3%) | 98.1% (89.9% to 100%) | 98.1% (89.9% to 100%) | 98.2% (90.4% to 100%) |