ABSTRACT
Objective To analyze reasons for the generation of unqualified blood specimens in coagulation test in tumor patients and to develop countermeasures ,so as to ensure the quality of samples prior to analysis .Methods Blood specimens received from outpatients in Tumor Hospital of Yunnan Province in 2012(40 253 specimens) ,2013(46 756 specimens) and first quarter of 2014 (14 566 specimens)were retrospectively analysed .Unqualified rate was used to describe situation of unqualified specimens ,and the distribution and changes of unqualified specimens were compared among the three years .Results The unqualified rate of blood specimens in coagulation test in 2012 and 2013 was 0 .57% and 0 .96% ,respectively .Reasons for unqualified blood specimens in 2012 was ,in order ,specimens agglutination ,insufficient amount of specimen ,excessive amount of specimen ,wrong container ,no specimen .Reasons for unqualified blood specimens in 2013 was ,in order ,specimens agglutination ,insufficient amount of specimen , excessive amount of specimen ,bar code error ,contaminated specimen ,wrong container ,no specimen ,hematocrit≥55% ,repeated in‐spection .Conclusion Coagulation test requires high quality specimen and quality assurance prior to analysis is particularly impor‐tant .The clinical laboratories should strengthen the links between the nursing and clinical departments ,timely communicate and feedback situation of unqualified specimens ,find the cause together and develop and implement effective improvement measures ,in order to ensure the quality of specimens on the steps before analysis .