Table 7.

Derived sensitivities and specificities at various time points after CPB at various urine NGAL cutoffs

NGAL Cutoff (ng/ml)	2 h Sensitivity	2 h Specificity	4 h Sensitivity	4 h Specificity	6 h Sensitivity	6 h Specificity
50	0.89	0.85	0.95	0.83	0.92	0.91
100	0.82	0.90	0.91	0.91	0.89	0.95
150	0.79	0.92	0.90	0.92	0.88	0.95
200	0.73	0.94	0.89	0.95	0.87	0.95
250	0.67	0.94	0.85	0.95	0.87	0.98
300	0.63	0.97	0.79	0.95	0.81	0.99
350	0.61	0.97	0.76	0.96	0.77	0.99
400	0.59	0.97	0.72	0.96	0.76	0.99