目的：通过血清丙氨酸氨基转移酶（ALT）检验室间质量评价工作，掌握全国血站血清ALT检验状况，使ALT检验逐步规范化，提高血站实验室ALT检验的水平和质量。
Objective: Through the external quality assessment for ALT, investigate the national level of examination with ALT, standardize the examination method and improve the testing Quality in blood banks.
方法：每年定期向参加红细胞沉降率室间质量评价活动的单位发放质评物，参加实验室用常规方法测定并回报结果，部临检中心对回报进行结果统计分析。
Methods: The quality control samples of ESR were send to laboratories who participate the EQA program. The samples were determined by routine methods in Laboratory. The results were analyzed by NCCL.
方法：每年定期向参加红细胞沉降率室间质量评价活动的单位发放质评物，参加实验室用常规方法测定并回报结果，部临检中心对回报进行结果统计分析。
Methods: The quality control samples of ESR were send to laboratories who participate the EQA program. The samples were determined by routine methods in Laboratory. The results were analyzed by NCCL.
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