Application of Westgard Internal Quality Control Frequency on-line Calculator in Blood Cell Analyse Internal Quality Control
10.3969/j.issn.1671-7414.2025.01.038
- VernacularTitle:Westgard室内质量控制频率在线计算工具在血细胞分析室内质量控制中的应用
- Author:
Qianhong WANG
1
;
Xueqin LI
;
Zhenling YANG
;
Xiaodong TONG
;
Kai LIU
Author Information
1. 乐山市妇幼保健院检验科,四川乐山 614000
- Publication Type:Journal Article
- Keywords:
hematology analyzer;
quality control;
run length;
quality control frequency
- From:
Journal of Modern Laboratory Medicine
2025;40(1):199-202
- CountryChina
- Language:Chinese
-
Abstract:
Objective To select the appropriate batch length and quality control procedure for the blood cell analysis project of the Women and Children's Hospital of Leshan with an online calculation tool of internal quality control frequency,and explored the measurement frequency of blood cell analysis laboratory quality control. Methods The coefficient of variation of blood cell analysis internal quality control of the Women and Children's Hospital of Leshan from April to December 2023 was collected as the imprecision of the project.The results of the laboratory participating in the 2023 National Health Commission inter-laboratory quality evaluation blood count experiment were used to evaluate the bias of each item. The allowable total error (TEa) for blood cell analysis items specified in WS/T 406-2012.Data were entered into the Westgard In-House Quality Control Frequency Calculator to calculate 10 corresponding batch lengths and different candidate statistical quality control (SQC) procedures online,including multi-rule,single-rule,and quality control concentration levels from 1 to 4.Combined with the actual situation of the laboratory,the SQC program with relatively simple quality control rules and relatively long batch length was selected. Results In blood cell analysis,13s,N=2 rule was used for WBC,HGB,MCV,MCH,MCHC,PLT,corresponding to the batch length of 1000. 13s/22s/R4s,N=2 rule was used for HCT,the corresponding batch length was 563,and the quality control frequency was 1 time per day. RBC was selected 13s/22s/R4s,N=2 rule,the corresponding batch length was 151,and the quality control frequency was 2 times a day or priority was given to improving the detection performance. Conclusion The Westgard internal quality control frequency calculator is an easy-to-use tool that allows select the right batch length and SQC program for lab,which can adjust the SQC protocol to needs.
