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首先建立了血清钠检测的量值溯源流程系统,将厂商提供的校准品溯源至参考物质和参考方法,其中参考方法选用IFCC推荐的火焰原子发射光谱法(FAES)。根据EP9-A2要求,用临床检测的常规方法与参考方法同时测定49例血清样本进行对比实验。完成了血清钠离子产品校准品的量值溯源,建立了血清钠离子检测系统的量值溯源性,以提高检测结果的可靠性。实验结果显示,临床检测的常规方法和参考方法有很好的相关性,且两种方法的测量值偏差符合CLIA’88的要求。
First, the system of traceability of serum sodium was established. The calibrators supplied by manufacturers were traceable to reference materials and reference methods. The reference method was FAEF recommended by FAE. According to the requirements of EP9-A2, 49 cases of serum samples were tested simultaneously by the conventional method and the reference method of clinical testing. The traceability of serum sodium ion calibration products was completed, and the traceability of serum sodium ion detection system was established to improve the reliability of test results. The experimental results show that there is a good correlation between the conventional methods of clinical testing and the reference methods, and the deviations of measured values of the two methods conform to the requirements of CLIA’88.