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Wells' Criteria for DVT

The Wells' criteria DVT calculator is an evidence-based clinical decision-making tool designed to assess the probability of deep vein thrombosis (DVT) in patients presenting with symptoms that may suggest this condition. Deep vein thrombosis is the formation of a blood clot in the deep veins, typically in the legs or pelvis, which can potentially lead to serious complications such as a pulmonary embolism if the clot dislodges and travels to the lungs.

This calculator employs the Wells' criteria for DVT, which is a set of clinical parameters developed by Dr. Phil Wells and his colleagues in 1997. It is widely used by healthcare professionals to classify patients into different risk categories based on their likelihood of having a DVT.

To utilize the Wells' criteria DVT calculator, clinicians enter patient-specific data, such as active cancer, recent immobilization, localized tenderness along the deep venous system, and leg swelling. The calculator assigns points to each criterion, and the total score determines the patient's risk category: low, moderate, or high probability of DVT.

Based on the risk category, the clinician may proceed with further diagnostic testing, such as D-dimer testing or imaging studies like venous duplex ultrasonography, to confirm or exclude the presence of a DVT. The Wells' criteria DVT calculator is a valuable tool that helps facilitate the diagnostic process, enabling quicker, more informed decision-making and potentially improving patient outcomes.

Wells' Criteria for DVT

Wells' Criteria for DVT






Bilrubin (Total)





Learn more on the BackTable VI Podcast

BackTable is a knowledge resource for physicians by physicians. Get practical advice on Wells' Criteria for DVT and how to build your practice by listening to the BackTable VI Podcast, reading exclusing BackTable Articles, and following the work of our Contributors.

Endovascular Treatment of DVT
Ep 59 Endovascular Treatment of DVT with Dr. David Dexter and Dr. Steven Abramowitz
00:00 / 01:04

Disclaimer: The Materials available on are for informational and educational purposes only and are not a substitute for the professional judgment of a healthcare professional in diagnosing and treating patients. The opinions expressed by participants of the BackTable Podcast belong solely to the participants, and do not necessarily reflect the views of BackTable.

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Deep Vein Thrombosis (DVT) Condition Overview
Venous Thromboembolism Condition Overview
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