A Prospective Evaluation of a Quantitative D-dimer Assay in the Evaluation of Acute Pulmonary Embolism

The use of a screening D-dimer measurement of 1.0 μg/mL or less precludes pulmonary CT angiography in patients with possible acute PE. The use of this quantitative D-dimer assay would decrease radiation exposure, contrast medium toxicity, cost, and time for patients seen in the emergency medicine department.