静脉血放置时间对 Sysmex XE-2100血液分析仪白细胞分类结果的影响

目的 探讨静脉血样品放置时间对Sysmex XE-2100全自动血液分析仪白细胞分类结果的影响.方法 室温下对Sysmex XE-2100白细胞分类的精密度进行测定,然后对42例静脉血标本分别于0、2、4、8、24和48 h用Sysmex XE-2100进行测定,并将白细胞分类测定结果进行统计比较,再将Sysmex XE-2100在0 h的分类结果与手工分类结果进行比较.结果 SysmexXE-2100白细胞分类的精密度在允许范围内,SysmexXE-2100白细胞分类结果与手工分类比较,中性粒细胞、淋巴细胞、单核细胞、嗜酸性粒细胞和嗜碱性粒细胞相关系数（r）分别为0.9859,0.9775,0.8053,0.8695,0.5243.大部分参数在8 h内没有显著性改变,48 h MONO（%）,EOS（%）有极明显变化,BASO（%）改变明显,而MONO（%）在8 h内已明显增高.结论 室温下,静脉血标本白细胞分类计数应于8 h内用Sysmex XE-2100测定完成.

Effect of Storing Time of Venous Blood Samples on the Differential Counts of White Blood Cells by Sysmex XE-2100 Hematology Analyzer

Objective To evaluate the influence of the storing time of venous blood samples on the differential count of WBC by Sysmex XE-2100 hematology analyzer. Methods At room temperature, the precision of the differential count of WBC by Sysmex XE-2100 hematology analyzer were tested. 38 samples were taken the differential count of WBC by Sysmex XE-2100 hematology analyzer after stored for 0, 2, 4, 8, 24 and 48 h. Differential count of WBC was also taken under microscope for comparison. Results The precision of differential count of WBC by Sysmex XE-2100 for all the samples was in the allowable range. The correlation coefficient of the differential count of WBC by two methods for neutrophils, lymphocytes, monocytes, eosinophils and basophils were 0.9859, 0.9775, 0.8053, 0.8695 and 0.5243 (P < 0.01). There was insignificant difference in the test at 8h, very significant difference of MONO and EOS at 48 h. Differences of EOS, MONO between two methods were significant increased at 8 h. Conclusion At room temperature, the differential count of WBC of venous blood samples by Sysmex XE-2100 hematology analyzer should finish within 8 h.