ABSTRACT
【Objective】 To investigate the status quo and existing problems of quality control laboratory of blood stations in Hebei province, and to provide reference for the capacity building of quality control laboratory in the future. 【Methods】 The data of routine blood collection and supply, blood component preparation, blood sampling ratio/frequency, and sampling results among 12 blood stations in Hebei in 2020 were collected. The monitoring effect of blood component quality in Hebei province, combined with the indicator changes of main blood components, were analyzed. 【Results】 Blood component preparation from blood stations in Hebei are different. The requirements for the number and frequency of routine sampling in each apartment are not standardized, and retrospective analysis was not conducted basically. Although the frequency and sampling of blood component quality monitoring can meet the minimum requirements of the Quality Monitoring Guidelines of Whole Blood and Blood Components 2017 and Technical Operating Regulations of Blood Stations (2019 Edition), but does not match the actual collection and preparation units. The qualification rate and reliability are unstable due to the small sample size. Monthly quality inspection can result in judgment errors, which is not conducive to systematic analysis and continuous improvement of blood collection and supply process. 【Conclusion】 In the context of continuous enhancement of blood collection and supply standardization in Hebei Province, the blood quality monitoring mechanism based on intra-province consistency can be further studied to standardize intra-province homogenization of blood quality monitoring in multiple links including sampling rules, statistical analysis and data comparison calibers.
ABSTRACT
【Objective】 To help quality control laboratory of blood station select suitable internal quality control rules using Westgard sigma rules. 【Methods】 The accumulated coefficient of variation of internal quality control was used as the measurement imprecision in quality control laboratory of blood station, and the bias of the results of EQA in 2020 was regarded as Bias. The allowable total error (TEa) of WS/T406-2012 was used as the evaluation index to calculate the σvalue of laboratory blood testing items to select reasonable and feasible quality control rules using the Westgard sigma rule. 【Results】 The average σvalues of total protein in the three national EQAS were 14.2, 8.7 and 9.6, respectively. The average σvalues of fibrinogen in two national EQAS were 3.6 and 4.1. The average σvalues of Plt counts and MCHC were <4 and >3, and those of other items were more than 6 in two national EQAS. 【Conclusion】 The rule of 13s, 13s/22s/R4s/41s/ and 13s/22s/R4s/41s/ should be used in total protein, fibrinogen and whole blood cell count testing, respectively, by Westgard sigma rule, which can effectively help the blood quality control laboratory select appropriate quality control rules.