FlowMet-R Blood Flow Measurement for the Diagnosis of Peripheral Artery Disease and Critical Limb Ischemia

Inclusion Criteria: PAD Positive Cohort * Subject meets PAD positive criteria * Subject is willing and able to provide informed consent * Subject is willing and able to comply with study procedures * Subject is able to understand the study procedures * Subject is scheduled for vascular examination that includes noninvasive assessments as standard of care: ABI, TBI, and either a Duplex Ultrasound or Angiogram Healthy Cohort * Subject is willing and able to provide informed consent. * Subject is willing and able to comply with the study procedures. * Subject is able to understand the study procedures. * Subject has no history of positive PAD diagnosis, and is not currently suspected of having PAD. Exclusion Criteria: PAD Positive Cohort * Subject is under 40 or unable to consent. * Subject has any medical condition, which, in the judgment of the Investigator and/or designee, makes the subject a poor candidate for the investigational study. * Subject is excluded from analysis if no stenosis is found during Doppler but Tibial disease is suspected and Tibial ultrasound is not able to be performed. * Subject does not have a suitable finger to attach the FlowMet-R probe. * Subject does not have a suitable 1st or 2nd digit to attach FlowMet-R probe on the limb of interest. * Subject has undergone revascularization within the last 90 days * Subject cannot lay safely in a supine position. Healthy Cohort * Subject is under 40 or unable to consent. * Subject has any medical cond…