Table 1. Forward and reverse grouping of donor sample at room temperature and 4ºC.

RT: room temperature; min: minutes

	Forward					Reverse
	Anti-A	Anti-B	Anti-AB	Anti-A1 lectin	Anti-H lectin	A1-cells	B-cells	O-cells	Auto-control
At RT	0	4+	4+	0	2+	0	0	0	0
RT 15 min	0	4+	4+	0	2+	0	0	0	0
RT 30 min	0	4+	4+	0	2+	0	0	0	0
4ºC 30 min	0	4+	4+	0	3+	2+	0	0	0