Table 2.

Percentage of extracted proteins

Flow rate	i	j	P value
0.25 mL/second	32.4%	27.4%	0.01 < P < 0.05
0.50 mL/second	36.7%	31.3%	0.01 < P < 0.05
1 mL/second	42.9%	38.9%	0.01 < P < 0.05

Note: Bevel opening toward the outflow channel versus bottom of the port with an off-centered needle insertion point.