 We will collect patient satisfaction data 2 minutes after the placement of the SpHb device and 2 minutes after the blood sampling. The collection of blood is considered standard of care. Along with recording hemoglobin measurements, we will record triage chief complaint, final physician diagnosis, time to blood products transfusion, time to disposition i.e. discharge home or Hospital admission via intensive care unit or general floor, time to procedure i.e. procedure via operating room, endoscopy with interventional gastroenterology, interventional pulmonology, or ENT, or interventional radiology, and hemodynamics i.e. blood pressure, heart rate, oxygen saturation, and respiratory rate. 