Wells PE & Revised Geneva (PE)
Score the two best-validated pretest probability tools for pulmonary embolism side by side - the Wells PE criteria and the revised Geneva score.
Open the calculator → Runs in your browser. Data leaves only if you deliberately send a problem report from the interactive tool.
Example
- Wells: alternative diagnosis less likely
- Yes
- Wells: HR > 100
- Yes
- Geneva: heart rate
- 105 bpm
Result: Wells PE 4.5 (PE-likely); Geneva ~3 (low/intermediate).
The tool opens with these values already filled in. Replace them with your own.
What the result means
- Low
- Low clinical probability of PE; a negative D-dimer can exclude PE per source.
- Intermediate
- Intermediate clinical probability of PE.
- High
- High clinical probability of PE; proceed to imaging per source.
What you enter
- Wells: clinical signs of DVT (3)
- Wells: alternative diagnosis less likely (3)
- Wells: HR > 100 (1.5)
- Wells: immobilization or surgery < 4 weeks (1.5)
- Wells + Geneva: prior VTE (1.5 / 3)
- Wells + Geneva: hemoptysis (1 / 2)
- Wells: malignancy (1)
- Geneva: age > 65 (1)
The other 5 fields
- Geneva: surgery / fracture < 1 month (2)
- Geneva: active malignancy (2)
- Geneva: unilateral leg pain (3)
- Geneva: heart rate (75-94 scores 3, >= 95 scores 5)
- Geneva: pain on lower-limb deep palpation + unilateral edema (4)
What this is
Both return a probability category (low, moderate, high) that drives the next diagnostic step (D-dimer if low, CT-PA if high, age-adjusted D-dimer in the gray zone). Sophie Well takes the shared clinical inputs once - heart rate, immobilization or recent surgery, prior DVT/PE, hemoptysis, active malignancy, clinical signs of DVT, alternative diagnosis less likely - and computes both scores so a clinician can see whether the two systems agree on the disposition.
When to use it
Use this when an ED or admitting workup raises concern for PE and you want a documented pretest probability before ordering D-dimer or CT-PA, when one of the two scores feels off and you want the other as a cross-check, or when an institution's protocol specifies a particular tool but the documenting provider is more familiar with the other. Pretest probability is the gatekeeper for whether a D-dimer rules out PE - it is meaningless after the imaging is already ordered - so the right time to compute it is before the diagnostic workup begins.
How this is calculated
Wells PS, et al. Thromb Haemost. 2000;83(3):416-420 (Wells PE). Le Gal G, et al. Ann Intern Med. 2006;144(3):165-171 (revised Geneva). Read the sources: Wells 2000 ↗, Le Gal 2006 ↗
A reference and educational tool. Not medical, legal, or financial advice, and not a substitute for clinician judgment.
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