Table 5. Relation between urinary and serum ZAG and eGFR in Group II and Group IV.

Variable	Group II		t	p
	GFR 90 - 120 (n = 8)	GFR > 120 (n = 14)
Urinary ZAG: (mg/g) Mean ± SD	32.63 ± 2.77	39.29 ± 1.14	7.99	< 0.001
Serum ZAG: (mg/L) Mean ± SD	24.38 ± 1.51	26.44 ± 1.82	2.71	0.01
Variable	Group IV		t	p
	GFR < 90 (n = 19)	GFR 90 - 120 (n = 3)
Urinary ZAG: (mg/g) Mean ± SD	56.63 ± 2.69	57.33 ± 2.52	0.42	0.78
Serum ZAG: (mg/L) Mean ± SD	40.37 ± 1.61	41.67 ± 0.58	1.36	0.19

ZAG: zinc alpha 2 glycoprotein, p-value < 0.05 is significant