TABLE 4.
Identification results obtained with algorithm for presumptive identification of gram-negative bacilli
| Observed color of colonies on CHROMagar Orientation medium | No. of isolates | No. (%) of isolates correctly identified |
|---|---|---|
| Pinkish to red | 218 | 218 (100) |
| Metallic blue (with or without halo) | 144 | 142 (98.6) |
| Diffuse brown | 23 | 19 (82.6) |
| Transparent yellow-green | 42 | 42 (100) |
| Aqua blue | 19 | 19 (100) |
| Bluish green | 2 | 2 (100) |
| Clear (whitish) | 18 | 18 (100) |
| Other colora | 6 | 6 (100) |
| Total | 472 | 466 (98.7) |
a
White (nontransparent, mucoid colony), white (nontransparent), or blue interior with pink halo.