The coagulation time of fibrinogen in plasma increased with the decreasing concentrations of chloromycetin, gentamycin sulfate and ciprofloxacin lactate, but decreased with the decreasing concentration of cefoperazone sodium.

• 随着氯霉素、硫酸庆大霉素和乳酸环丙沙星浓度的降低，血浆中纤维蛋白原的凝固时间延长；而随着头孢哌酮钠浓度的降低，凝固时间反而缩短。