The insulin that did not pass albumen enzymatic hydrolyze former, one fraction enters haemal circulation as insulin, former biology active reachs insulin only 5% of insulin.

• 未经过蛋白酶水解的胰岛素原，一小部分随着胰岛素进入血液循环，胰岛素原的生物活性仅及胰岛素的5%25。