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When alcohol is consumed, it is absorbed from the mouth, throat, stomach, and intestines into the bloodstream.
As blood flows through the lungs, alcohol in the bloodstream moves across the membranes of the lung’s air sacs (alveoli) into the air. The concentration of the alcohol in the alveolar air is directly related to the concentration of the alcohol in the blood. As the alveolar air is exhaled, the alcohol in it can be detected by the breath alcohol testing device.
All data in this study was collected from the BACtrack Mobile Breathalyzer, a smartphone breathalyzer with police-grade Xtend® Fuel Cell Sensor Technology. When a user blows into BACtrack Mobile, BAC results are wirelessly transmitted via Bluetooth® to an iOS or Android device. With the free BACtrack companion app, a user can get more than a simple BAC result -- they can track, save and share BAC results, attach a note or photo to a result, and with BACtrack's ZeroLine® feature, get an estimate of when their BAC will return to 0.00%.
San Francisco-based BACtrack is the leader in breathalyzers, offering a full range of innovative products for both personal and professional use. Founded in 2001, BACtrack helps people monitor their blood alcohol content and make informed decisions about alcohol consumption. In April 2013, BACtrack launched BACtrack Mobile, the world's first smartphone breathalyzer that uses fuel cell sensor technology and Bluetooth connectivity and has since won Popular Science's 2013 'Best of What's New' Award for its innovation in health. BACtrack breathalyzers are available in 20 countries and at over 10,000 store locations including Walgreens, Costco, Best Buy, and Pep Boys. BACtrack products can also be purchased online at BACtrack.com, Amazon, Brookstone, drugstore.com and other locations. BACtrack products have been featured on Oprah's All Stars, The Dr.Phil Show, The Doctors, and MythBusters. Connect with BACtrack via Twitter and on Facebook. For more company information, explore our site, www.bactrack.com.