Wells Score Calculator
Check Wells DVT criteria — low / moderate / high bands. Click any i for detail.
Wells DVT criteria
Active cancer
i
+1
Treatment within 6 months or palliative. |
|
|---|---|
Paralysis / cast
i
+1
Paralysis, paresis, or recent plaster immobilization of the legs. |
|
Bedridden / major surgery
i
+1
Recently bedridden ≥3 days or major surgery within 12 weeks. |
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Localized tenderness
i
+1
Tenderness along the deep venous system. |
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Entire leg swollen
i
+1
Whole-leg swelling. |
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Calf swelling ≥3 cm
i
+1
Calf swelling ≥3 cm compared with the asymptomatic leg. |
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Pitting edema
i
+1
Pitting edema confined to the symptomatic leg. |
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Collateral superficial veins
i
+1
Non-varicose collateral superficial veins. |
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Previously documented DVT
i
+1
Prior DVT. |
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Alternative diagnosis as likely
i
−2
Alternative diagnosis at least as likely as DVT. |
How to use this calculator
- Check each criterion that applies.
- Leave others unchecked.
- Read the total score and risk band.
- Follow clinical pathways — this is not a diagnosis.
Results explained
The classic three-tier Wells DVT score sums clinical points. Roughly: 0 = low, 1–2 = moderate, ≥3 = high pretest probability. Local protocols and D-dimer/ultrasound pathways govern care.
Quick reference: Wells DVT
Sum points; 0 low · 1–2 moderate · ≥3 high.
| Item | Detail |
|---|---|
| Most positives | +1 each |
| Alt. diagnosis | −2 |
| Low | Score 0 |
| High | Score ≥3 |
Educational checklist only — not a diagnosis or triage order.
How the estimate is built
score = Σ checked criteria points (incl. −2 if alt diagnosis).
Example scenario
Tenderness + calf swelling only → score 2 (moderate).
FAQ
PE Wells?
This page is the DVT checklist, not PE.
Two-tier Wells?
Some systems use different cutoffs — follow your protocol.
Does a high score mean DVT?
No — it stratifies pretest probability only.
Who should use this?
Learners reviewing criteria — clinicians use local tools.