Table 4.

Perfusate Biomarker Concentration by Organ Discard Status

Biomarker	Discarded Kidneys (N=128)	Transplanted & DGF (N=141)	Transplanted & Non-DGF (N=287)	P-value (Discard vs. DGF)	P-value (Discard vs. Non-DGF)
Base pi-GST, ug/L	188 [42–337]	243 [76.3–398.8]	176 [61–335]	0.07	0.90
Post pi-GST, ug/L	580 [353–965]	652 [394–980]	446 [298–870]	0.34	0.12
Base alpha-GST, ug/L	93 [16–270]	153 [66.3–412.5]	140 [38–373]	0.004	0.03
Post alpha-GST, ug/L	303 [158–723]	506 [225.6–865]	372 [215–747.5]	0.02	0.22
Renal resistance at 4 hrs, mmHg/ml/min	0.29 [0.21–0.4]	0.23 [0.19–0.32]	0.22 [0.17–0.29]	<0.001	<0.001
Perfusate flow at 4 hrs, ml/min	93 [71–118]	110 [91–131]	114 [98–131]	<0.001	<0.001

Values are medians [interquartile range]. DGF, delayed graft function; GST, glutathione S-transferase. P-values were obtained by Wilcoxon rank sum tests comparing discarded kidneys with transplanted kidneys that either did or did not develop DGF as indicated.