The number of hospital participating in Shanghai local IQC and EQA schemes increased year by year;
参加上海市地区性室内质量控制和室间质量评价的医院数量逐年增多；
Objective: to improve the quality of clinical laboratory results by external quality assessments (EQA).
目的：通过开展室间质量评价活动提高临床实验室检测质量。
Objective To discuss the validity of using external quality assessment (EQA) for the ALT measurement calibration.
目的探讨alt测定利用室间质评(EQA)作校准的有效性。
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