The reasons of false-negative results in urine analysis and its improvement measures / 中国基层医药

ABSTRACT

Objective To explore the reasons of false-negative results in urine analysis and improvement measures.Methods Fresh morning urine specimen of 1 080 cases from January 2012 to March 2012 in our hospital were selected,and they were determined by dry chemical and sediment microscopic examination,then the results were compared between the two methods.Results 713 cases of white blood cells and 748 cases of red blood cells showed negative results by dry chemical method,while 692 cases of white blood cells and 723 cases of red blood cells showed negative results by sediment microscopic examination;The false negative rate of red blood cells and white blood cells by two methods were 2.95％,3.34％,the test results of the two methods showed no significant differences(x2 =0.900,1.330,all P ＞ 0.05).Conclusion The urine analysis should combine with dry chemical method and artificial microscopic urine analysis to improve the precision and accuracy of the test results,and to oliminate interference factors for avoiding undetected false detection.