Interval before death	Number of patients	Urea above normal range	Creatinine above normal range	Both abnormal
3 days or less	8	7 (88%) ( max 36.6)	8 (100%) (max 285)	7
4–7 days before death	9	3 (33%) (max 9.2)	2 (22%) (max 150)	1
8–14 days before death	13	7 (54%) (max 21.5)	4 (31%) (max 172)	2
More than 14 days before death	18	7 (39%) (max 15)	3 (17%) (max 179)	2