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Wells Score for DVT

Nine +1 items and −2 if an alternative diagnosis is as likely as DVT (teaching checklist).

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Check all that apply:

Active cancer (treatment within 6 months or palliative) (+1) Paralysis, paresis, or recent plaster immobilization of lower extremity (+1) Recently bedridden >3 days or major surgery within 12 weeks (+1) Localized tenderness along deep venous system of entire leg (+1) Entire leg swollen (+1) Calf swelling >3 cm compared with asymptomatic leg (+1) Pitting edema confined to symptomatic leg (+1) Collateral superficial veins (non-varicose) (+1) Previously documented DVT (+1) Alternative diagnosis at least as likely as DVT (−2)

Wells DVT score

How it works

The Wells DVT score estimates pretest probability of lower-extremity DVT using bedside variables.

Limits

Bilateral symptoms, upper-extremity thrombosis, and pregnancy are not fully captured.

Educational tool only—not for diagnosis or treatment decisions.

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