Expert Center

We are committed to educating people about how alcohol affects their bodies and building awareness about far-reaching consequences of alcohol consumption and impaired driving.

Understanding BAC

How Does a Breathalyzer Work?

Stacey Sachs
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Most breathalyzers use one of three technologies to detect Blood Alcohol Content (BAC), which is the concentration of alcohol in a person's blood: a semiconductor oxide sensor, a fuel cell sensor or an infrared spectrometer. Semiconductor oxide-based...
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What is the Highest Recorded %BAC?

Chris Otchy
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According to CBC News Canada, a Bulgarian man holds the record for the highest BAC level ever recorded, and specifically the highest survivable BAC level. In December 2004, a 67-year-old man in Plovdiv, Bulgaria was taken to the hospital to be treate...
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What is BAC?

Chris Otchy
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Blood Alcohol Content (BAC) describes the percentage of alcohol present in the blood. BAC testing enables law enforcement and medical professionals--as well as concerned individuals--to objectively estimate the level of a person’s alcohol intoxicatio...
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Three Types of BAC Testing

Chris Otchy
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In the United States, you are considered to be legally intoxicated and prohibited from driving a vehicle if your blood alcohol content (BAC) is 0.08% or greater. The three most common methods for testing BAC are breath, blood, and urine tests. Many s...
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Limitations of BAC Calculators and Charts

Alex Wald
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A variety of free and readily available blood alcohol content (BAC) calculators and charts can help you approximate your BAC levels. But simplicity is not always a virtue. BAC calculators and charts have inherent limitations, and are usually accomp...
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How Many Drinks Does it Take to Reach 0.08 %BAC?

Alex Wald
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In an era of heightened awareness about the perils of drinking and driving, the decimal 0.08 requires no explanation. Smartphone Breathalyzers | Professional Breathalyzers | All Breathalyzers When yo...
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Factors that Affect BAC

Andrew Spencer
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Blood alcohol content (BAC) is a measure of the amount of alcohol that is present the blood, based on the volume of alcohol consumed over a given period of time. While some may choose to count drinks or use calculators to guess their BAC, you should ...
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Calculating your BAC

Chris Otchy
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Your blood alcohol concentration (BAC) can be measured multiple ways. You can have it tested by a law enforcement officer on the side of a road or in a clinical setting such as a lab. Or you can dispense with the legal ramifications, humiliation, pai...
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.08 %BAC: How Many Drinks Does it Take to Get There?

Alex Wald
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In an era of heightened awareness about the perils of drinking and driving, the decimal, “0.08,” requires no explanation. We all know what it means: If your blood alcohol content (BAC) is 0.08% or higher, you’re legally impaired and you can be arreste...
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