Which of the following is NOT a component of the Well's Criteria?

• A. Abnormal D-dimer level
• B. Active cancer
• C. Paralysis, paresis, or recent plaster immobilization of the LE
• D. Alternative diagnosis as likely or greater than that of proximal DVT

Answer: (A)

Well's criteria is a clinical scoring system for assessing the likelihood of deep venous thrombosis based on specific signs and risk factors. It includes active cancer, paralysis or recent immobilization of the leg, localized deep tenderness, leg swelling, calf swelling, pitting edema confined to the leg, prior DVT, and an alternative diagnosis as likely as or less likely than DVT (which adds a negative point). D-dimer testing, while valuable in evaluation, is not a component of the Wells scoring itself; it’s a separate test used to help rule out DVT in low-probability cases or to prompt further imaging when results are abnormal. So the abnormal D-dimer level is not part of the Wells Criteria scoring.