What happens to alcohol concentration during the elimination phase?

During the elimination phase of alcohol consumption, the concentration of alcohol in the bloodstream decreases. This is due to the body's metabolic processes, primarily occurring in the liver, where enzymes break down alcohol, leading to its gradual removal from the system. The rate of elimination is relatively constant and influenced by factors like individual metabolism, age, health, and frequency of alcohol consumption.

Understanding the elimination process is crucial in alcohol testing protocols, as it directly impacts the interpretation of test results. For example, in the context of the Intoxilyzer 9000, knowing that alcohol concentration decreases over time helps law enforcement and clinicians accurately assess a person's blood alcohol content (BAC) at the time of the test in relation to when the alcohol was consumed. This knowledge can also affect legal outcomes in cases of DUI.