Table 3.

Percentage of extracted proteins

Flow rate	j	α = 0°	P value
0.25 mL/second	27.1%	22.1%	Nonsignificant
0.50 mL/second	31.3%	27.7%	Nonsignificant
1 mL/second	38.9%	36.2%	Nonsignificant

Note: Bevel opening toward the outflow channel with a centered versus off-centered needle insertion point.