Open AccessPerformance of the Dimension TAC assay and comparison of multiple platforms for the measurement of tacrolimus
Author(s) -
Cho EunJung,
Ko DaeHyun,
Lee Woochang,
Chun Sail,
Lee HaeKyung,
Min WonKi
Publication year - 2018
Publication title -
journal of clinical laboratory analysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.536
H-Index - 50
eISSN - 1098-2825
pISSN - 0887-8013
DOI - 10.1002/jcla.22357
Subject(s) - detection limit , tacrolimus , reagent , dimension (graph theory) , critical dimension , coefficient of variation , clinical practice , correlation coefficient , linearity , chromatography , medicine , chemistry , mathematics , statistics , transplantation , engineering , physics , electrical engineering , family medicine , pure mathematics , optics
Background Therapeutic monitoring of tacrolimus is essential for reducing organ rejection and adverse effects. The measurement of tacrolimus in whole blood is taken by many automated platforms. We evaluated the analytical performance of the Dimension TAC assay, which is an upgraded reagent from the previous Dimension TACR assay. Methods The evaluations involved determination of precision, linearity, detection capability, and reagent lot‐to‐lot variability between three lot numbers. Correlation studies were conducted using the Dimension TACR assay, Architect, Elecsys assay, and MassTrak LC ‐ MS / MS . Results The total coefficient of variation was below 10%. Acceptable linearity was observed in their respective reportable ranges. The limit of blank, limit of detection, and limit of quantification were 0.29, 0.47, and 0.81 ng/ mL , respectively. Correlation analysis indicated that the Dimension TAC assay results were comparable to that of the Dimension TACR assay, Architect, and Elecsys results in liver and heart transplant patients. In kidney transplant patients, the Dimension TAC assay showed the poor correlation with Architect and Elecsys. The results from these assays were slightly higher than that of MassTrak. We found little lot‐to‐lot reagent variation among the reagents evaluated. Conclusion The overall analytical performance of the Dimension TAC assay is acceptable for therapeutic monitoring in clinical practice. Our study that compared different platforms may provide some useful information regarding which test method to use.