Pulmonary Function Test/Lung Function Test/Spirometry measures lung function using spirometry—no blood sample required.
About pulmonary function testing
What is Pulmonary Function Test/Lung Function Test/Spirometry?
Breathing test measuring volumes and airflow—used for asthma, COPD, and occupational screening.
Blood required?
No—a mouthpiece and nose clip are used for the breathing test.