您说的是头孢类药物皮试的配置方法吧!.皮试液浓度为500ug/ml,注入皮下的剂量为0.1ml,含头孢50ug.配置如下:.取生理盐水2ml,溶于头孢0.5g中(或者生理盐水4ml,溶于头孢1.0g中),现浓度为250mg/ml.取0.2ml,加生理盐水至1ml,现浓度为50mg/ml.去0.9ml,余0.1ml,加生理盐水至1ml,现浓度为5mg/ml.去0.9ml,余0.1ml,加生理盐水至1ml,现浓度为500ug/ml,即为皮试液.头孢皮试配置与青霉素的皮试配置大同小异,可简单记为抽仨去俩.青霉素抽(0.1,0.1,0.1)去(0.9,0.9.头孢类抽(0.2,0.1,0.1)去(0.9,0.9。