What term refers to the concentration of alcohol in a person's bloodstream?

What term refers to the concentration of alcohol in a person's bloodstream?

• A. Blood Alcohol Concentration (BAC)
• B. Breath Alcohol Content
• C. Alcohol Level
• D. Intoxication Level

Answer: (A)

The concept being tested is how alcohol in the bloodstream is quantified. The standard term is Blood Alcohol Concentration, or BAC. This measures the percentage of ethanol in the blood and is the official value used by law enforcement and medical professionals to determine impairment. BAC can be determined from a blood sample or estimated from a breath test, and both methods reflect the same underlying concentration. The number rises as you drink and falls as the body metabolizes alcohol, with the rate influenced by factors like body weight, sex, drinking speed, and whether you’ve eaten. Other phrases such as Breath Alcohol Content, Alcohol Level, or Intoxication Level are less precise or describe a state rather than a measurable value, so BAC is the best, most consistent term.

The concept being tested is how alcohol in the bloodstream is quantified. The standard term is Blood Alcohol Concentration, or BAC. This measures the percentage of ethanol in the blood and is the official value used by law enforcement and medical professionals to determine impairment. BAC can be determined from a blood sample or estimated from a breath test, and both methods reflect the same underlying concentration. The number rises as you drink and falls as the body metabolizes alcohol, with the rate influenced by factors like body weight, sex, drinking speed, and whether you’ve eaten. Other phrases such as Breath Alcohol Content, Alcohol Level, or Intoxication Level are less precise or describe a state rather than a measurable value, so BAC is the best, most consistent term.