Alcohol concentration is defined as grams of alcohol per which combinations?

• A. 210 liters of breath; 100 milliliters of blood; 67 milliliters of urine
• B. 100 liters of breath; 200 milliliters of blood; 70 milliliters of urine
• C. 210 milliliters of breath; 100 liters of blood; 67 liters of urine
• D. 210 liters of breath; 100 milliliters of blood; 67 milliliters of urine

Answer: (A)

Alcohol concentration in DUI law is defined using three standard sample types with specific units: grams of alcohol per 100 milliliters of blood, per 210 liters of breath, and per 67 milliliters of urine. These equivalents come from established conversion factors that relate the amount of alcohol in the blood to what can be measured in breath or urine. In enforcement, this means the same level of intoxication is expressed across all three methods using those exact units.

The option that uses those exact combinations—210 liters of breath, 100 milliliters of blood, and 67 milliliters of urine—fits the standard definitions. The other choices mix incorrect units or amounts for one or more sample types, so they don’t align with the established definitions.