Comparison between Roche Integra 400 plus and Abbott Architect ci8200 in Alanine aminotransferase assay

Abstract

BackgroundThe aim of this work is to present the results of a comparative study between the ALT assay on Integra 400 plus Roche Diagnostic versus Architect ci8200 of Abbott Diagnostic. MethodsA total of 200 patients hospitalized in the various departments of the university hospital Mohammed VI of Oujda were prospectively tested on two systems: Abbott Architect ci8200 and Roche Integra 400 plus. Both analyzers use the spectrophotometric technique by coupling the transamination reaction to the oxidation-reduction reaction at NAD. The agreement of the results between the different techniques was evaluated using the Bland-Altman difference diagram and the Passing-Bablok and Deming regression line. ResultsThere was a high concordance between the two assays: the equation of the Passing-Bablok line is YArchitect ​= ​−0,5625 ​+ ​0,9917 XIntegra with a correlation coefficient r2 = 0.999. The Bland-Altman diagram shows that the mean bias between the two methods is of the order of 1.1 IU/L and the difference between the ALT measurements by Architect and Integra is in the range of −1.4 to 3.6. ConclusionOur study shows a high correlation of the ALT assay results between the architect ci8200 and Integra 400 plus.