乙酰螺旋霉素属大环内酯类抗生素,效价测定依据卫生部药品标准(95)卫药标字02号文,采用微生物法。我们依据此标准检定,出现标准品及供试品高剂量所致的抑菌圈直径在15～16ｍｍ(二剂量法),而中国药典1995年版二部附录73页规定在18～22ｍｍ。该抗生素对检定菌的敏感度较低,抑菌圈 Acetylspiramycin is a macrolide antibiotic, potency based on the Ministry of Health Drug Standards (95) Wei Yao Zi word 02, the use of microbial law. According to this standard, we can see that the diameter of bacteriostasis ring caused by high-dose of standard products and test products is 15-16mm (two-dose method), while that of Chinese Pharmacopoeia 1995 edition is 73-72mm. The antibiotic is less susceptible to the test bacteria, inhibition zone