GPAtlas🧮 Clinical calculator · Thrombosis and cardiovascular
Wells score for suspected DVT (two-level)
Sorts suspected DVT into likely or unlikely. The split NICE NG158 uses to decide whether a proximal leg vein ultrasound or a D-dimer comes first.
Free to use, no account needed. Result: Two-level DVT Wells score. Last reviewed 29 Jul 2026.
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Before you rely on the result: NICE NG158 does not cover pregnancy, so this pathway does not apply in pregnancy or the postpartum period. A score supports a decision, it never makes one.
Related Ocean Article: Deep Vein Thrombosis (DVT).
Further reading: Superficial Vein Thrombosis (Superficial Thrombophlebitis) · DVT Prevention for Travellers · Oral Anticoagulation.
Part of the GPAtlas clinical calculators, each result explained, built by practising UK GPs.