Evaluation of the accuracy of pulse oximeters compared with CO-Oximetry in hypoxaemic normal subjects.

This study is testing the accuracy of a new pulse oximeter — the device that clips onto your finger to measure the oxygen level in your blood. Researchers want to compare how well this new device measures blood oxygen under different conditions compared to the current gold standard laboratory method. This is an important safety study to make sure pulse oximeters give accurate readings. You may be eligible if: - You are an adult (18 years or older, up to 80 years old) - You are generally healthy You may NOT be eligible if: - You have a heart condition - You have a respiratory (lung) condition - You have a history of stroke (CVA) Talk to your doctor about whether this trial might be right for you.