Blood Alcohol Content BAC Calculator
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Online Breathalyzer And Blood Alcohol Content Calculator. Had a few drinks? Feeling a bit drunk? Not sure if you should drive and risk a drink driving charge? Try the R U Pissed online breathalyzer and blood alcohol content calculator.

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The Effects Of Alcohol On The Body

Alcohol acts primarily on the nerve cells within the brainby interfering with communication between nerve cells and all other cells, suppressing the activities of excitatory nerve pathways and increasing the activities of inhibitory nerve pathways.

Alcohol enhances the effects of inhibitory neurotransmitters like GABA, and weakens the effects of excitatory neurotransmitters like Glutamine. Enhancing an inhibitor, or weakening an excitor, will have the external effect of making the person sluggish, which matches the behavior you see in a drunk person, and slowing down the overall functioning and reflex responses of the body.

The body responds to alcohol in stages, which correspond to an increase in BAC:

BAC (%)StageClinical Symptoms
0.01 - 0.05SubclinicalBehavior basically normal by ordinary observation.
0.03 - 0.12EuphoriaMild euphoria, sociability, talkativeness, increased self-confidence; decreased inhibitions. Diminution of attention, judgment and control. Beginning of sensory-motor impairment. Loss of efficiency in finer performance tests.
0.09 - 0.25ExcitementEmotional instability; loss of critical judgment. Impairment of perception, memory and comprehension. Decreased sensitory response; increased reaction time. Reduced visual acuity; peripheral vision and glare recovery. Sensory-motor incoordination; impaired balance. Drowsiness.
0.18 - 0.30ConfusionDisorientation, mental confusion; dizziness. Exaggerated emotional states. Disturbances of vision and of perception of color, form, motion and dimensions. Increased pain threshold. Increased muscular incoordination; staggering gait; slurred speech. Apathy, lethargy.
0.25 - 0.40StuporGeneral inertia; approaching loss of motor functions. Markedly decreased response to stimuli. Marked muscular incoordination; inability to stand or walk. Vomiting; incontinence. Impaired consciousness; sleep or stupor.
0.35 - 0.50ComaComplete unconsciousness. Depressed or abolished reflexes. Subnormal body temperature. Incontinence. Impairment of circulation and respiration. Possible death.
0.45 +DeathDeath from respiratory arrest.

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This web site does not endorse drink driving or the excessive consumption of alcohol. Blood alcohol calculations are to be used as a guide only.