Objective To establish the reference intervals of neuron specific enolase (NSE) in tumor markers in cerebrospinal fluid .Methods According to National Committee for Clinical Laboratory Standards document C 28‐A2 ,120 samples were collected to establish reference intervals .Then ,the established intervals were evaluated according to China National Accreditation Service for Conformity Assessment document CL38 :2012 .Results The biological reference interval of NSE in cerebrospinal fluid was 0-3 .14 ng/mL .There was no significant correlation between cerebrospinal fluid NSE level and age ,sex (P> 0 .05) .Conclusion Method used in this study could be ensured reliable ,accurate ,scientific and practical ,desirable for clinical requirement and with great poten‐tial for clinical application .
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