D dimer is a blood test that evaluates levels of a protein fragment when there’s a clot hanging around in the bloodstream. If this level is elevated, it’s often a tip-off that there was a tiny blood ...

Does an elevated ultrasensitive D-dimer level in a patient whose pre-test probability puts him at low risk for pulmonary embolus (PE) indicate an increased risk for PE or deep venous thrombosis (DVT)?

—Can an age-adjusted cutoff level for D-dimer enable clinicians to safely rule out deep vein thrombosis (DVT) in some adults? That was the question at the core of a multicenter, multinational, ...