What are the scoring cutoffs for the Well's Criteria?

• A. 0-1: DVT unlikely; 2-3: indeterminate
• B. <3: DVT unlikely; 3 or more: DVT likely
• C. <2 points: DVT unlikely; 2 or more points: DVT likely
• D. <1 point: DVT unlikely; 2-5: DVT likely

Answer: (C)

The Well’s criteria is a clinical scoring system used to estimate the probability of DVT based on specific signs, symptoms, and risk factors. Each positive item adds a point (with one item subtracting points if an alternative diagnosis is more likely).

The scoring cutoffs are straightforward: if the total is less than two points, DVT is considered unlikely; if the total is two points or more, DVT is considered likely. This threshold is used to decide the next steps in testing, such as using a D-dimer test for low-probability cases or proceeding to compression ultrasonography when probability is higher.