Wells Score for DVT Calculator
Calculate the Wells score for deep vein thrombosis (DVT) probability assessment using clinical criteria.
Medical Disclaimer
This calculator is for informational and educational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider before making decisions about your health. Never disregard professional medical advice or delay seeking it because of results from this tool.
Inputs
Results
Wells Score
0pts
Risk Category
1(1=Low, 2=Moderate, 3=High)
How to Use This Calculator
- Enter 0 or 1 for each Wells DVT criterion (active cancer, paralysis, bedridden, local tenderness, etc.).
- Review Wells DVT Score and pre-test probability category (low, moderate, high).
- Low probability score with negative D-dimer effectively rules out DVT without ultrasound.
What each input means
- Active Cancer
- Treatment within 6 months or palliative (+1 point).
- Paralysis/Paresis/Immobilization
- Recent paralysis, paresis, or plaster cast of lower extremity (+1 point).
- Bedridden >3 Days / Surgery <12 Weeks
- Bedridden for >3 days or major surgery within 12 weeks (+1 point).
- Localized Tenderness
- Tenderness along deep venous system (+1 point).
- Entire Leg Swollen
- Entire leg is swollen (+1 point).
- Calf Swelling >3 cm
- Calf swelling >3 cm compared to asymptomatic leg (+1 point).
- Pitting Edema
- Pitting edema confined to symptomatic leg (+1 point).
- Collateral Superficial Veins
- Non-varicose collateral superficial veins (+1 point).
- Previously Documented DVT
- Previously documented DVT (+1 point).
- Alternative Diagnosis Likely
- Alternative diagnosis at least as likely as DVT (-2 points).
How this is calculated
Worked example, using the default values
- Identify Input Parameters4 parametersActive Cancer = 0, Paralysis/Paresis/Immobilization = 0, Bedridden >3 Days / Surgery <12 Weeks = 0, Localized Tenderness = 0 = 10 input(s) provided
- Calculate Wells ScoreWells Score0 = 0
- Calculate Risk CategoryRisk Category1 = 1
- Calculate DVT PrevalenceDVT Prevalence3 = 3%
Related Calculators
The questions that sit next to this one — chosen by subject, including calculators filed under a different category.
Wells Score for PE Calculator
Calculate the Wells score for pulmonary embolism (PE) probability using clinical prediction criteria.
Clinical MedicineCHA₂DS₂-VASc Score Calculator
Calculate the CHA₂DS₂-VASc score for stroke risk stratification in atrial fibrillation patients.
Clinical MedicineIV Drip Rate Calculator
Calculate drops per minute and mL per hour for IV fluid administration based on volume, time, and drop factor.
More in Medical & Clinical.