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Head and shoulders portrait of a senior man performing breath test to diagnose SIBO (small intestinal bacterial overgrowth) Model Spirometry consist in measuring the volume and the flow of air that a person is able to inhale and expire This breath test can be used to detect COPD and asthma Here the person used a peak flow meter that mesures the peak expiratory flow (which means t drunk driving Young millennial woman using breath alcohol analyzer in the car. Closeup with selective focus. Girl taking alcohol test with breathalyzer. Man blowing into breathalyzer Young woman holding breathalyzer cropped view of policeman giving breathalyzer to driver in car, blurred foreground. Belfast, Northern Ireland. 24 Nov 2016 - A police officer holds a roadside breathalyser alcohol breath test after taking a sample from a driver. Driver due to being subject to test for alcohol content with use of breathalyzer breath test machine 2 Woman performing a spirometry test in a pneumology lab a woman with a breathalyzer in the car, testing for alcohol