Clinical appliection of calibration for automated hematology analyzers with EP9-A

Objective To calibrate hematology analyzers with fresh blood to make their parameters comparable．Methods According to EP9-A，one of the standard files of NCCLS，we use BAYER ADVIA120 as a reference method to make compaire to SYSMEX XT-1800，with WBC、RBC、HGB、PLT．Results the correlation coefficients of WBC、RBC、HGB、HCT、PLT of XT-1800 are all over 0．975 and the systematic errors in medicine decide level are all below the TEa that is acceptable in clinic．Conclusions In order to get the correct result，we must make’a comparison between different analyzers and methods. Key words: Hematology analyzer; Calibration; EP9-A