ABSTRACT
Objective To explore the division XL automatic urine analyzer reagent strips placed time impact on nitrite (NIT) test results,to ensure that provide accurate and reliable experimental data for clinical,and improve clinical diagnostic rate. Methods Used a new load reagent storehouse article in the new reagents respectively in <5,30 min;1,2,3,3.5,4,4.5,5, 5.5,6,6.5,7 and 8 h,in different period,16 0.9 g/dl saline NIT in the false positive rate,and carried on the comparison to different times NIT false-positive rate analysis.Results <3.5 h NIT false positive rate was 0% (0/16),4~4.5 h false pos-itive rate was 18.8% (3/16),5~5.5 h false positive rate was 43.8% (7/16),6~6.5 h was 62.5% (10/16),7~8 h was 87.5% (14/16).More than 4 h each time comparison between NIT false positive rate,differences were statistically signifi-cant (χ2 =11.7~59.2,all P <0.01).Conclusion Division XL automatic urine analyzer reagent strips placed after 4 h,NIT false-positive rate started to rise,NIT false-positive rate was significantly increased after 5 h.Therefore,strengthen the divi-sion XL automatic urine analyzer reagent strips placed reasonable time management,should be in the < 3.5 h advisable,it helps reduce the NIT false positive rate.