Discrepancies between two D-dimer assays and impact on clinical decisions; a retrospective analysis of samples tested in community and hospital-based laboratories in Auckland.

Aim: In patients with suspected venous thromboembolism, an elevated D-dimer level provides an important branch-point in the management pathway. This study compared two D-dimer assays, INNOVANCE® DDimer (Innovance) and STA®-Liatest® D-Di Plus (Liatest), to assess potential impact on clinical management.

Method: Reflecting current practice in Waitematā, Auckland, we compared paired samples from 805 patients referred to hospital following a community D-dimer test.