The Wells Score for PE is a clinical prediction tool used to estimate the probability of pulmonary embolism based on history, examination, and risk factors.

Higher scores indicate a higher clinical probability of pulmonary embolism. The score can be interpreted using either a two-tier model or a three-tier model.

In the two-tier model, a score of 4 or less suggests PE is unlikely, while a score greater than 4 suggests PE is likely.

No. The Wells Score is a clinical support tool and should be used alongside professional judgment, D-dimer testing, and imaging when appropriate.