Table 4.

Serum and urine NGAL levels in AP patients with and without AKI (after excluding those who had AKI on day 1)

NGAL	NGAL levels in patients with AKI (ng/mL)	NGAL level in patients without AKI (ng/mL)	P‐value
Serum day‐1	714.94 ± 285.04	473.29 ± 197.77	0.02
Serum day‐3	742.61 ± 255.97	463.86 ± 222.33	0.01
Urine day‐1	405.1 ± 154.11	158.25 ± 99.98	<0.001
Urine day‐3	286.37 ± 147.26	150.28 ± 93.54	0.03

AKI, acute kidney injury; AP, acute pancreatitis; NGAL, neutrophil gelatinase‐associated lipocalin.