Objective To establish the method of the SYBR Green Ⅰ real‐time fluorescent quantitative PCR for detecting the se‐rum miR‐203 expression level ,and to detect the serum miR‐203 expression levels in the patients with cervical cancer ,cervical benign diseases and healthy controls .Methods The miR‐203 ,U6 stem loop RT primers and the PCR amplification primers were designed for conducting fluorescence quantitative PCR ,with U6 as the internal relative quantification ,the serum miR‐203 levels were com‐pared among different cervical diseases .Results The established method could specifically detect the amplification signal of serum miR‐203 ,the melting curve was single and PCR products were specific .The serum miR‐203 level in the patients with cervical cancer was significantly higher than that in the patients with benign cervical diseases such as hysteromyoma and cervicitis ,the difference was statistically significant (P<0 .05) .Conclusion The SYBR Green Ⅰ real‐time fluorescent quantitative PCR is a quick ,simple detection method with high sensitivity and good specificity ,which may have a better application prospect in cervical cancer auxiliary diagnosis .

Objective To evaluation the precision performance of XE-2100 Automatic Blood Cell Analyzer using EXCEL Mi-crosoft with reference to CLSI EP15-A3 .Methods According to CLSI EP15-A3 ,high level and low level (BIO-RAD company) of quality control materials were measured using XE-2100 Automatic Blood Cell Analyzer ,and analyzed by one-factor analysis of vari-ance of EXCEL 2003 and equation editor .The within-run coefficient of variation and within-laboratory coefficient of variation were calculated and compared with national industry standards and manufacturer statement .Results For high and low level of quality control materials ,the within-run coefficient of variation and within-laboratory coefficient of variation of white blood cell ,red blood cell ,hemoglobin and platelet were less than national industry standards and manufacturer statement .Conclusion The precision ver-ification scheme of CLSI EP15-A3 with EXCEL Microsoft has a relatively good maneuverability and statistical performance ,which could be used in verification of the precision performance of quantitative testing items in clinical laboratories .