Wells-Score for deep-vein thrombosis

Additional Information

Score Description

The Wells-Score for deep-vein thrombosis is a scoring system to evaluate the clinical probability of deep-vein thrombosis (DVT), before laboratory or radiology testing. The accuracy of the Wells-Score and D-Dimer test for the diagnosis of isolated DVT was assessed in a single center, cross-sectional study including 873 consecutive outpatients with suspected DVT. While the Wells-Score and D-Dimer alone were of little diagnostic utility for isolated DVT, isolated DVT could be ruled out by the combination of a low pretest clinical probability with the Wells-Score and a normal D-Dimer.


Low probability -2–0
Moderate probability 1–2
High probability 3–8

Further Reading

Wells PS et al. Value of assessment of pretest probability of deep-vein thrombosis in clinical management. Lancet. 1997; 350: 1795-8.