Table 5. Performance of extraction method MBT-CA for identification of Gram negative bacteria.

Specimen ID Direct Transfer	Specimen ID after Extraction	Number of Isolates	Percent of Isolates
High Confidence	N/A*	2094	92.2
Low Confidence	High Confidence	64	2.88
Low Confidence	Low Confidence	34	1.53
Low Confidence	No ID	4	0.18
No ID	High Confidence	16	0.72
No ID	Low Confidence	10	0.45
No ID	No ID	2	0.09

*—extraction procedure not needed.