Signs of intoxication at increasing levels of blood alcohol concentration (BAC)

BAC Signs of intoxication

0.02-0.03 mild euphoria and loss of shyness; no apparent loss of coordination

0.04-0.06 sense of well-being and relaxation; sensation of warmth; some decline in ability to perform two tasks simultaneously; lowered judgment about capabilities

0.07-0.09 some impairment of balance, reaction time, speech, and memory; reduced judgment, caution, and self-control; continued euphoria

0.10-0.125 obvious impairment of muscle control and reaction time; loss of good judgment; slurred speech

0.13-0.15 major loss of balance and physical control; blurred vision; appearance of dysphoria (emotional depression)

0.16-0.20 nausea, dysphoria, confusion, loss of memory

0.25 severe impairment of all mental and physical functions

0.30 loss of consciousness

0.40 onset of coma; possible respiratory arrest and death