As PF4 factor prohibit the action of heparin APTT is shortened and minus error is formed. It is suggested that the coagulation vacuum tubes without dead space should be used in monitoring the heparin therapy.是什么意思_As PF4 factor prohibit the action of heparin APTT is shortened and minus error is formed. It is suggested that the coagulation vacuum tubes without dead space should be used in monitoring the heparin therapy.在线翻译_英语_读音_用法_例句