Objective To evaluate the performance verification of Mindary BC5390 hematology analyzer .Methods According to requirement of CLSI documents ,the precision ,accuracy ,linearity ,carryover were evaluated .Results The background counts all met the designed requirements of manufacturer .Precision ,accuracy ,linearity of the WBC ,RBC ,PLT ,Hb ,HCT ,MCV were good and the contamination carrying rates were low .Except for basophils ,the classification of leukocyte was well correlated with the artificial microscopy classification(r2 >0 .95) .Conclusion The BC5390 is a ideal automated hematology analyzer which has high precision and accuracy ,wide linearity ,low contamination carrying rate ,and it can be used for the blood samples analysis .

Objective To investigate the diagnostic value and significance of myocardial injury markers in neonates.Methods A retrospective analysis of 838 cases of myocardial injury markers in neonates,the total positive rate of hs -cTnI and the positive rates of hs -cTnI(hypersensitivity cardiac troponin I)in different kinds of neonatal disease were calculated,the levels of abnormalities consistent rate in hs -cTnI and CK -MBmass(creatine kinase MB mass)were compared with hs -cTnI and MYO(Myoglobin).Results The total positive rate of hs -cTnI was 40.33% in the 838 neonates.The highest incidence of myocardial injury was neonatal sepsis (57.14%),followed by neonatal pulmonary hemorrhage (55.56%)and neonatal convulsions (54.55%).The abnormalities consistent rate of hs -cTnI and CK -MBmass was better than hs -cTnI and MYO (85.50% vs 28.11%,χ2 =226.9,P <0.05). Conclusion Neonatal hospitalized children often complicated by myocardial injury;As a biochemical myocardial injury marker,the hs -cTnI detection is important for early detection of myocardial injury,it should be recommend as routine test items;CK -MBmass has better correlation with hs -cTnI than MYO,which can provide guide for doctors to interpret the data of myocardial injury markers.