Table 4.

Diagnostic performance of different uNGAL thresholds to detect the development of AKI and persistent AKI within 48 hours

uNGAL cutoff (ng/mg creatinine)	Sensitivity (%)		Specificity (%)		Correctly classified (%)
	AKI	Persistent AKI	AKI	Persistent AKI	AKI	Persistent AKI
0.05	85	89	44	42	56	51
0.1	77	78	53	50	60	56
0.2	77	78	72	67	73	69
0.3	69	67	75	69	73	69
0.4	62	67	81	78	76	76
0.8	62	67	84	81	78	78
1	62	67	88	83	80	80
1.5	54	56	97	92	73	84

AKI, acute kidney injury; uNGAL, urine neutrophil gelatinase-associated lipocalin.