于内含先锋霉素0.5g的 瓶内注入2ml生理盐水,则每1ml含先锋霉素250mg; 于内含先锋霉素0.75g的 瓶内注入3ml生理盐水,则每1ml含先锋霉素250mg; 于内含先锋霉素1g的 瓶内注入4ml生理盐水,则每1ml含先锋霉素250mg; 于内含先锋霉素1.5g的 瓶内注入6ml生理盐水,则每1ml含先锋霉素250mg; 于内含先锋霉素2g的 瓶内注入8ml生理盐水,则每1ml含先锋霉素250mg; 取上液0.2ml,加生理盐水至1ml,则1ml内含先锋霉素50mg; 取上液0.1ml,加生理盐水至1ml,则1ml内含先锋霉素5mg; 取上液0.1ml,加生理盐水至1ml,则1ml内含先锋霉素500μg ,即配成皮试液 |
为0.1ml(含先锋霉素50μg)。具体配制方法如下: