Abstract: Objective To observe the influence of pneumatic tube system (PTS) on some plasma coagulation factors and biochemical parameters. Method Thirty bags of whole blood were stored for 5 days in 450 ml each. Damping (for 15 bags) and non-damping (15 bags) methods of PTS transportation were used. The coagulation factors, lactic acid, and free hemoglobin were measured by ELISA, and plasma TP、Alb、LDH 、K⁺、Na⁺、CL^- and Ca²⁺ were measured by automatic biochemical analyzer before and after PTS transportation. Results No significant difference was seen in the parameters of FI, FⅡ, FⅢ, FⅣ, FⅤ, FⅦ, FⅧ, FⅨ, FⅩ, FⅪ, FⅫ, FⅧ,TP, Alb, albumin/globulin ratio, lactic acid, LDH 、FHb 、K⁺、Na⁺、CL^- andCa²⁺ before and after the PTS transportation no matter what methods were used (P>0.05). Conclusions Pneumatic tube system has limited impact on the plasma coagulation factors and biochemical parameters in whole blood. Immediate whole blood transfusion after transportation is safe in clinical blood transfusion.

Key words: Pneumatic tube system, Whole blood, Plasma, Coagulation factors, Biochemistry