Laboratory Medicine ›› 2018, Vol. 33 ›› Issue (6): 563-566.DOI: 10.3969/j.issn.1673-8640.2018.06.020

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Six sigma for evaluating the performance of blood cell analysis internal quality control inter-laboratory comparison among 17 laboratories from Grade 3 Class A hospitals in Hebei

WANG Huiru1, LI Guixia1(), HUANG Jing1, WU Hao1, DI Yang2   

  1. 1. Department of Clinical Laboratory,Children's Hospital of Hebei Province,Shijiazhuang 050031,Hebei,China
    2. Hebei Center for Clinical Laboratories,Shijiazhuang 050031,Hebei,China
  • Received:2017-01-25 Online:2018-06-30 Published:2018-07-06

Abstract:

Objective To use six sigma(6σ) for evaluating the performance of blood cell analysis internal quality control(IQC)inter-laboratory comparison among 17 laboratories from Grade 3 Class A hospitals in Hebei,and to improve the quality of blood cell analysis. Methods The data of IQC inter-laboratory comparison among 17 laboratories from Grade 3 Class A hospitals in Hebei were collected,and the determination items included white blood cell(WBC) count,red blood cell(RBC) count,hemoglobin(Hb) and platelet (PLT) count,and coefficients of variation(CV),biases(Bias),sigma(σ) values and quality goal indices(QGI) were calculated. Results Using WS/T 406—2012 as standard for allowable total error(TEa),the laboratories with the performance of WBC count,RBC count,Hb and PLT count with 2 levels (middle level and high level)≥6σ accounted for 52.94% and 47.06%,17.65% and 17.65%,35.30% and 23.53%,52.94% and 58.82%,and those with 4≤σ<6 accounted for 35.30% and 47.06%,29.41% and 29.41%,47.05% and 47.06%,35.30% and 35.30%,respectively. Conclusions The performance of blood cell analysis IQC inter-laboratory comparison among 17 laboratories is good,and 6σ is a unified and simple method for IQC.

Key words: Six sigma, Blood cell analysis, Internal quality control, Inter-laboratory comparison, Grade 3 Class A hospital

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