Levels of oxygen,carbon dioxide,and pH in the blood are tested by
A)pulmonary function test.
B)arterial blood gases.
C)lung ventilation/perfusion scan.
D)spirometry.

Question

Quizplus · Accepted Answer

Arterial blood gases are the most reliable method to test the levels of oxygen, carbon dioxide, and pH in the blood. This involves taking a blood sample from an artery typically in the wrist, and assessing the blood gases in a laboratory. Pulmonary function tests and spirometry are tests of lung function and do not directly measure gas levels in the blood. Lung ventilation/perfusion scans are imaging tests that evaluate the airflow and blood flow in the lungs, but are not direct measurements of gas levels in the blood.

Levels of Oxygen,carbon Dioxide,and PH in the Blood Are Tested