The average biological activity of the reference in 10 calibration tests was 12 701 ATU per container,and standard deviation and variation coefficient were 2 226 ATU per container and 17.5% respectively.

• 经过10次标定；平均生物学活性为12 701 ATU/支；标准差为2 226 ATU/支；变异系数为17.；5%25。