BECKMAN-COULTER LH750血液分析仪“WBC Correct”功能评估

Evaluation on the " WBC Correct" function performance of BECKMAN-COULTER LH750 hematology system

目的对BECKMAN-COULTER LH750血液分析仪(简称LH750)关于白细胞(WBC)计数的一项特殊功能——"WBC Correct"的准确性及可靠性进行统计及评估。方法以卫生部推荐的《红细胞和白细胞计数的参考方法》对WBC计数结果受到仪器自动修正的样本进行手工计数,并将计数结果与仪器结果进行统计学分析。结果 WBC Correct修正后的WBC计数结果与手工法计数结果具有非常好的相关性,比没有该功能的同系列机型的WBC计数结果更准确、可靠,但在420例被检的标本中有5例结果有明显误修正。结论 LH750修正功能有较高的实用价值,但也不排除误修正的可能性,因此在工作中应密切注意仪器的修正提示,必要时应进行手工复检。

Objective To analyze statistically the accuracy and reliability of a special function for white blood cell （WBC）count in BECKMAN-COULTER LH750 hematology system （LH750）---＂WBC Correct＂function.Methods According to the Reference Method for Red Cell and White Cell Counting published by the Ministry of Health,the WBC counts of the samples corrected automatically by machine had been counted manually.The results were analyzed statistically.Results There was a good correlation for the results by LH750 WBC Correct function and manual counting method,and LH750 WBC Correct function had good accuracy and reliability.There were 5 wrong corrections among 420 samples.Conclusions The LH750 WBC Correct function is practically significant.However,there are some wrong corrections.Therefore,it should be paid more attention to the correction flags.Manual counting method should be carried on when a wrong correction occurs.