Abstract
Recently, Roche announced a problem with the calibrators for their high sensitive cardiac troponin T (hscTnT) assay. We have monitored the performance of the assay since its introduction into clinical use in December 2009 and we're in a unique position to provide quantitative information concerning the effects of this problem. Our data document that the measured cTnT concentration in the hscTnT assay dropped by 5.8 ng/L around the 99th percentile before its recalibration in May 2012. Thus, the hscTnT levels in our hospital have been underestimated around this cut-off value since its introduction. The approach we used may be one that other laboratories should consider.
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