病情分析：常用头孢菌素皮肤试液的制备方法头孢曲松钠的制备；曲松1.0g，取生理盐水4ml，取0.2ml+0.8ml，取0.1ml+0.9ml，取0.1ml+0.9ml，注射头孢哌酮20.1ml，舒巴坦钠1.0g，胡椒酮1.0g，取生理盐水4ml，取0.2ml+0.8ml，取0.1ml+0.9ml，取0.1ml+0.9ml，注射0.1ml3头孢呋辛钠：取0.75g头孢呋辛钠和3ml生理盐水，取0.2ml+0.8ml0.1ml+0.9ml0.1ml+0.9ml，注射0.1ml 。