Laboratory Medicine ›› 2019, Vol. 34 ›› Issue (9): 855-858.DOI: 10.3969/j.issn.1673-8640.2019.09.020

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Preliminary study on external quality assessment method of thromboelastography

WANG Qing, QIAO Zhenglei, SONG Ying   

  1. Shanghai Center for Clinical Laboratory,Shanghai 200126,China
  • Received:2018-11-10 Online:2019-09-30 Published:2019-09-29

Abstract:

Objective To investigate an appropriate external quality assessment(EQA) method for thromboelastography(TEG). Methods The response time(R),clot kinetics(K),angle(ANG) and maximum amplitude(MA) of 16 samples in 5 EQA plans from 2016 to 2018 in Shanghai were analyzed and evaluated by medium(M)±1.96 inter quartile range(IQR),M±2.58 IQR,synthetic coefficient of variation(SCV) and allowable total error(TEa) based on current technical level. The qualified rates of assessment results were compared. Results The qualified rates of R,K,ANG and MA obtained from traditional statistical methods such as M±1.96 IQR,M±2.58 IQR,3SCV and TEa80 were listed as R:86.36%-98.39%,86.36%-98.44%,56.45%-97.62% and 80.65%-100.00%;K:86.36%-98.39%,86.36%-100.00%,50.00%-98.39% and 75.81%-100.00%;ANG:86.36%-98.39%,86.36%-100.00%,29.03%-100.00% and 80.65%~100.00%;MA:81.82%-97.62%,86.36%-100.00%,51.56%-90.48% and 81.82%-100.00%. Conclusions TEa80(R:M±33.28%,K:M±38.24%,ANG:M±30.77% and MA:M±26.45%) is suitable for the evaluation of TEG EQA quality in Shanghai,which could satisfy the current analysis level of TEG determination in Shanghai.

Key words: Thromboelastography, External quality assessment, Allowable error range

CLC Number: