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Objective To study the interference and influence of blood specimen hemolysis in biochemical test results.Methods80 cases of personnel received physical examination in our hospital from May 2014 to May 2016 were selected, these personnel were divided into hemolytic group (n=40) and non hemolytic group (n=40) on the basis of blood specimen hemolysis occurred situations, 5mL morning fasting venous blood of the two groups was collected, they were placed in heparinized tubes, the blood of the hemolytic group was stirred by bamboo inducing hemolysis;The blood of the non hemolysis group was without the above treatment, directly at the rate 2500r/min 10min centrifugal separating serum, the K+, GLU, ALB, TP, CK, TBIL, BUN, ALT, AST, LDH levels of the two groups were detected by automatic biochemical reaction analyzer, and then the biochemical indicators levels of the two groups were statistically analyzed.ResultsThe level of GLU in the hemolysis group was significantly lower than that in the non hemolytic group (P<0.05), the K+, TP, CK, TBIL, AST, LDH levels in the hemolysis group were significantly higher than those in the non hemolytic group (P<0.05), but the differences of ALB, BUN, ALT levels between the two groups were not significant.ConclusionBlood specimen hemolysis can interfere and influence the biochemical tests results to some extent.
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Objective: Based on the same clinical laboratory automatic blood coagulation analyzer method comparison of different brands. Discuss different between blood coagulation analyzer test results are comparable or check whether the deviation of the results in the permitted range. Method:collecting 112 cases of fresh plasma specimens, using ACL ADVANCE and Sysmex CA7000 two kinds of blood coagulation analyzer, respectively prothrombin time (PT), activated partial prothrombin time (APTT), thrombin time (TT) and fibrinogen (FIB), and compare the results, to medical decision level of judging system error detection system for clinical result, and calculate the two blood coagulation instrument testing results of the correlation coefficient and linear regression equation. Results:the ACL ADVANCE and Sysmex CA7000 blood coagulation analyzer test of PT, APTT, TT and FIB result comparison, there were no statistically significant difference (t=0.974, t=0.649, t=0.765, t=1.163;P>0.05), the correlation coefficient respectively;Medical decision level of system error were less than half the total margin of error. Conclusion:to the ACL ADVANCE as standard test system, Sysmex CA7000 determination results have clinical acceptability, two blood coagulation test results with good correlation. Should be conducted on a regular basis in the same laboratory coagulation analyzer compares different experiments, to ensure the comparability of the same in the laboratory test results.
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Objective To discuss the feasibility of enzymatic reference methods in Routine Chemistry external quality assessment (EQA)inlaboratorymedicine.Methods Samplesofthe1stEQAin2012byNationalCenterforClinicalLaboratories(NCCL)and patients′sera were measured by reference methods and 5 clinical analytic systems for the catalytic activity of CK ,LDH ,ALP ,ALT , AST ,GGT and AMY ,then the results of 5 clinical systems were compared with the reference methods′or target value of NCCL by calculating the bias ,and evaluated them according to the criteria of EQA by NCCL .Results The results of EQA samples measured by reference methods was within ± 10% compared with NCCL target value .Compared with the results of reference method ,the through put was 100 .0% for wet clinical chemistry systems measuring both EQA samples and patients′serum ,and the dry clinical chemistry systems was 77 .1 for EQA samples and 97 .1% for patients′serum according to the criterion of EQA ,and the through put was 72 .9% and 63 .6% of wet clinical chemistry systems according to the standard of enzymatic trueness of NCCL .Conclusion Reference method could be applied to EQA ,and will be a great help for the trueness of clinical testing .