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。