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How Long Does Alcohol Stay In Your System: Urine, Blood & Breath?

By Kyle Thompson on

Alcohol is mainly broken down by the liver, which can metabolize roughly 1 standard drink per hour for men. Factors such as age, weight, gender, and amount of food eaten can affect how fast the body can process alcohol. The rate of alcohol metabolism cannot be increased by sleeping or drinking water.

How long does alcohol stay in your system?

Alcohol is detectable for up to 6 hours in blood; about 12-24 hours in breath, urine, and saliva; and up to 90 days in hair.

How Is Alcohol Metabolized?

Although alcohol passes through the digestive system, it does not undergo extensive digestion within the digestive tract in the same manner as food. When it reaches the upper gastrointestinal tract, a significant portion is absorbed directly into the bloodstream through the tissue lining of the stomach and small intestines. Once in the bloodstream, it is carried throughout the body and travels to the brain.1

The absorption process may be somewhat slowed when there is food in the stomach. Food can absorb alcohol, block it from coming into contact with the stomach lining, or slow its transit from the stomach into the duodenum (the first portion of the small intestine), where it otherwise is very rapidly absorbed into the bloodstream.1

How Long Does It Take for Alcohol to Kick In?

A healthy person will usually feel the effects of a drink within 15 to 45 minutes.1

Most men with little to no tolerance will begin to show some signs of intoxication when their blood alcohol level (BAC) reaches 0.05%, and their ability to drive will be significantly impaired at 0.07%. At 0.10%, they will be clearly intoxicated.2

A woman who weighs 150 pounds will reach a BAC of 0.1% (intoxication) if she consumes about 4 drinks in an hour.2

How Do You Know When You’re Drunk?

The higher your BAC, the more likely you will be to display signs of intoxication, which include:3

  • Lowered inhibitions.
  • Slurred speech.
  • Impaired coordination.
  • Confusion.
  • Trouble remembering things.
  • Difficulty concentrating.
  • Breathing problems (e.g., decreased respiratory effort, respiratory depression).

People who are drunk are also more at risk for:3

  • Motor accidents.
  • Risky behaviors, such as unprotected sex.
  • Violence.
  • Suicide and homicide.
how long does alcohol stay in your system?

How Long Does It Take to Get a Drink Out of Your System?

Alcohol is primarily broken down in the liver through the actions of an enzyme called alcohol dehydrogenase. On average, the liver can metabolize 1 standard drink per hour for men, or about 0.015g/100mL/hour (i.e., a reduction of blood alcohol level, or BAC, by 0.015 per hour). In addition to liver processing, about 10% of alcohol is eliminated through sweat, breath, and urine.1

A standard drink is defined as:4

  • 12 fl oz of regular beer.
  • 8-9 fl oz of malt liquor.
  • 5 fl oz of wine.
  • 1.5 fl oz shot of distilled spirits (gin, rum, tequila, vodka, whiskey).

Factors that may influence how fast alcohol is broken down include:5

  • Age.
  • Weight.
  • Gender.
  • Metabolism.
  • How much food the person ate.
  • Type and strength of the alcohol.
  • Whether the person has taken any medications.

Does Drinking Water or Coffee Help You Sober Up?

The breakdown and elimination of alcohol cannot be sped up by drinking water or sleeping, and neither coffee nor a shower will sober you up faster. They might make you more alert, but they will not eliminate alcohol from your blood. As long as your rate of consumption is greater than your rate of elimination, your BAC will continue to rise.1

When Is Alcohol No Longer Detected on a Test?

The amount of time alcohol can be detected in your system depends on the type of test used.

  • Blood: up to 6 hours
  • Breathalyzer: 12-24 hours
  • Saliva: 12-24 hours
  • Urine: 12-24 hours for older methods of testing; 72 hours or longer for newer methods that test for ethanol metabolites such as ethyl glucuronide and ethyl sulfate
  • Hair: up to 90 days2,6
Since alcohol is metabolized fairly quickly, most clinicians rely on observations of alcohol use—such as slurred speech or the smell of alcohol—or a breathalyzer test to confirm intoxication or recent drinking.2

 

How Much Alcohol Will Kill You?

Alcohol overdose, or alcohol poisoning, can be fatal. You can overdose when there is a high enough amount of alcohol in your system to cause life-supporting functions such as breathing or heart rate to dangerously slow or shut down.4

As your BAC rises, you may begin to feel more negative effects of intoxication and your risk of overdose increases: 4

  • 06% – 0.15% BAC: speech, memory, attention, coordination, balance moderately impaired; driving ability significantly impaired
  • 16% – 0.30% BAC: significant impairments in speech, memory, attention, balance, reaction time, and coordination; driving ability dangerously impaired; judgment and decision-making impaired; risk of blackouts; vomiting; loss of consciousness
  • 31% – 0.45% BAC: risk of life-threatening overdose and risk of death from suppression of breathing, heart rate, and body temperature

Symptoms of an overdose include: 4

  • Profound mental confusion.
  • Stupor.
  • Loss of consciousness.
  • Vomiting.
  • Clammy skin.
  • Pale or bluish skin color.
  • Low body temperature.
  • Slow heart rate.
  • Slowed or irregular breathing.

Your risk of overdose increases if you binge drink which, by one definition, entails consuming 4 drinks in 2 hours for a woman or 5 drinks in 2 hours for a man. Extreme binge drinking is drinking 2 or more times the binge drinking thresholds. Drinking a large amount of alcohol in a short time greatly outpaces the liver’s ability to clear alcohol from the body and leads to a rapid increase in BAC. 4

The risk of overdose may become even greater if a person mixes alcohol with opioid or sedative-hypnotic medications, such as painkillers, sleep medications, or anti-anxiety drugs. These drugs also suppress breathing, and combined with alcohol, these effects are intensified and can lead to an overdose with even moderate levels of alcohol. 4

Risks of Alcohol Abuse

According to the National Survey on Drug Use and Health, roughly 14.5 million people age 12 or older had an alcohol use disorder in the U.S. in 2017. This figure represents 5.3% of all people in this age group. Alcohol-related deaths are the third-leading cause of preventable death in the country, with about 88,000 people dying each year from liver failure, overdose, drunk driving, and other accidents.5,6

Knowing more about how alcohol is metabolized and keeping track of your likely blood alcohol levels can help you prevent unintended over-intoxication and accidental death from alcohol poisoning. Understanding the dangers of alcohol can also help avoid a cycle of growing tolerance, physical dependence and, ultimately, a compulsive pattern of problematic alcohol use that culminates in addiction development.

Drink Smarter. Live Better

Your liver can only process one drink per hour. So when you drink more alcohol than it can break down, alcohol-induced toxins build up and put more stress on your body. Flyby was carefully formulated  with 17 liver-supporting ingredients like DHM, Milk Thistle, N-Acetyl-Cysteine, Prickly Pear, Vitamins, Electrolytes to support your body's normal metabolism after drinking so you wake up feeling refreshed.

SOURCES

[1]. Bowling Green State University. Alcohol Metabolism.

[2]. Substance Abuse and Mental Health Services Administration. (2006). Substance Abuse: Clinical Issues in Intensive Outpatient Treatment.

[3]. National Institute on Alcohol Abuse and Alcoholism. Overview of Alcohol Consumption.

[4]. National Institute on Alcohol Abuse and Alcoholism. (2018). Understanding the Dangers of Alcohol Overdose.

[5]. United Kingdom National Health Service. (2018). How long does alcohol stay in your blood?

[6]. American Society of Addiction Medicine. (2013). Drug Testing: A White Paper of the American Society of Addiction Medicine.

[7]. Substance Abuse and Mental Health Services Administration. (2018). Key Substance Use and Mental Health Indicators in the United States: Results from the 2017 National Survey on Drug Use and Health.

[8]. National Institute on Alcohol Abuse and Alcoholism. (2018). Alcohol Facts and Statistics.