The reporting units used will affect the cut-off. Most contemporary laboratories use high sensitivity assays.ĭ-dimer can be reported as fibrinogen equivalent units (FEU) or d-dimer units (DDU). Check your local institutions guidelines.
Furthermore, different laboratories may use different ‘cut-offs’ for what constitutes a positive or negative result. There are many different D-Dimer assays (qualitative and quantitative) available.ĭifferent types of assay are not standardised and have varying sensitivities and specificities.
It is a marker of blood clotting activity.
