Blood Alcohol Content (BAC)
Blood Alcohol Content (BAC) levels represent the percent of your blood that is concentrated with alcohol. Breathalyzer tests are the most accurate measure. The Widmark Formula is a close second.
A = Alcohol Consumed (grams)
B = Body Weight (grams)
r = Gender Constant (.55 F and .68 M)
t = Time in Hours since First Drink
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