As alcohol is ingested, it passes from the stomach into the small intestine where it is absorbed in the blood. As blood alcohol concentrations increase, a person’s response to stimuli becomes less precise.

Blood alcohol concentration depends on the amount of alcohol consumed, the rate at which it was consumed, body size, and the rate at which the user’s body metabolizes alcohol. Individual metabolic rates vary.

Breath Alcohol is measured in grams per 210 liters of breath /100 milliliters of blood.

Breath Alcohol testing is often required as part of a company drug and alcohol policy to assist in creating a safe work environment. Alcohol testing can be used for pre-access, pre-employment, reasonable cause and post-accident depending on company policy or federal regulations.