Blood alcohol levels are determined for toxicology and legal purposes.
In many jurisdictions, a blood alcohol level of 100 mg/dl defines the threshold for "driving while under the influence of alcohol". In other jurisdictions, the threshold is 80 mg/dl.
Diabetic ketoacidosis may falsely elevate blood alcohol levels.
Normal Values*
Normal
None
Flushing
Slowed reflexes
Diminished visual acuity
50–100 mg/dl
CNS depression
>100 mg/dl
Possible death
>400 mg/dl
*These are general values taken from a variety of sources. The actual normal values may vary from lab to lab and from one type of testing protocol to another.
