06 DVT Deep Vein Thrombosis (DVT) The Wells’ DVT Criteria can be used in the outpatient and emergency department setting.By risk stratifying to low risk (Wells’ Score <2) and a negative d-dimer the clinician can exclude the need for ultrasound (USG) to rule out DVT. Referenceshttps://www.mdcalc.com/wells-criteria-dvt