Arterial blood gas test
It can be conducted to measure the level of oxygen and carbon dioxide gasses in the blood.
Lungs will be subjected to tests to see how much air a person can breathe in and out, and how fast.
Serum bicarbonate test
A test to measure the amount of carbon dioxide in the serum; liquid part of the blood.
Pulse oximetry test
A small sensor is clipped to the fingertip of a person to measure the amount of oxygen in the blood.
The imaging of the chest is done to look for abnormalities that may be linked to cystic fibrosis.
EKG records the electrical activity of the heart and looks for any irregularities.