Alcoholic blackouts are seen at levels of alcohol in blood

Acute Alcohol Intoxication: Blood Alcohol concentration Symptoms 20 - 30 mg / dL Decreased concentration decreased motor performance 30 - 80 mg/dL Signs of intoxication appears, worsening of motor symptoms and thinking ability. 80 - 200 mg /dL Incordination 200 - 300 mg / dL Alcohol blackout (Anterograde Amnesia) > 300 mg / dL Coma & Death.