Age-adjusted D-dimer FEU

D-dimer

D-dimer concentration may be determined by a blood test to help diagnose thrombosis.

D-dimer increases with age. It has therefore been suggested to use a cutoff equal to patient’s age in years × 10 µg/L (or x 0.056 nmol/L) for patients aged over 50 years for the suspicion of venous thromboembolism (VTE), as it decreases the false positive rate without substantially increasing the false negative rate.