Direction Finger Pulse Oximeters for patients under the care of the physician Nonin Medical, the originator of finger pulse oximetry and a preferred product amid the respiratory therapists, proffers direction and the non prescription finger pulse oximeters for the domestic use. The Nonin's GO2 medical devices and the United States federal law confines these instruments to sale by or on the sort of an approved clinician. A patient needs a directional oximeter to monitor the blood oxygen saturation for a chronic disease such as the COPD. To maintain the much needed criteria such as the accuracy prescription devices should be FDA cleared for the medical monitoring. The Nonin’s GO2 is contrived to the similar technological stipulation and engineered with the similar expertise that is worn in specialized medical grade oximeters. Though it should be clearly notified that the GO2 is not planned to analyze, treat, cure or prevent any chronic lung or other diseases.