Find out what you need to know about hydrogen breath tests, and discover how they work, ... If you receive a fructose breath test, your doctor will first measure the hydrogen levels in your breath.

A breath alcohol test measures how much alcohol is in the air you breathe out. The device uses that measurement to estimate how much alcohol is in your blood. That number is known as your BAC, or ...

Alcohol breath tests, commonly called breathalyzers, measure blood alcohol content (BAC). The more intoxicated a person is, the higher their BAC. This test is often used by law enforcement to ...

To diagnose chronic obstructive pulmonary disease (COPD), doctors typically use spirometry to measure your lung function. They usually also perform other tests to monitor the damage to your lungs.

In a post Gideon Horner is seen holding his breath for one minute as a timer ticks down from A to B claiming that those who can do so are in a prestigious group of only one in 20 people.

Examples of "vital-capacity tolerance tests" on 2 patients are presented in Tables 1 and 2.Patient E. S. demonstrates the lability of pulse and respiratory rate that was occasionally noted.

Participants in the study took breathing tests to measure their lung function as many as six times over the three decades. During the study, 138 experienced a sharp decline in their lung function.