Pharmacogenomics in Stroke: Feasibility of CYP2C19 Testing

Inclusion Criteria: * Patients 18-89 years of age * admitted to University of Alabama at Birmingham (UAB) main hospital with symptoms or signs of minor ischemic stroke, or high risk TIA * eligible to receive dual antiplatelet load (presented to the hospital within 66 hours of last known well) Exclusion Criteria: * diagnosis of atrial fibrillation, valvular heart disease, index stroke due to known hypercoagulability (subset of other determined etiology) or large vessel disease (culprit vessel stenosis of ≥50%) * prescribed anticoagulation prior to stroke * treated with intravenous thrombolysis * treated with mechanical thrombectomy * missing NIH Stroke Scale score