How Long Does Alcohol Stay in the Body?

August 25, 2017

Harmony Place Team

Last Updated: August, 7, 2025

How Long is Alcohol in My System?

How long alcohol lasts in the body depends on several factors including the amount consumed, body weight, metabolism, and overall health. Approximate alcohol detection times in different bodily sample types are as follows:

Blood: Up to 12 hours
Breath: 12–24 hours
Urine (EtG test): 2–5 days
Saliva: 12–24 hours
Hair: Up to 90 days

How is Detection Time Calculated?

Alcohol detection times are calculated based on how long alcohol and its byproducts, known as metabolites, remain measurable in different parts of the body. In blood, alcohol can typically be detected for up to 12 hours. This is because blood alcohol concentration (BAC) decreases at a steady rate of about 0.015 per hour, meaning a BAC of 0.08 would take roughly five to six hours to fully clear. Breath tests, like breathalyzers, can detect alcohol for about 12 to 24 hours after drinking, since alcohol vapor is exhaled through the lungs until it is fully metabolized.

Urine tests vary in sensitivity. Standard urine tests detect alcohol for up to 24 hours, while more advanced EtG (ethyl glucuronide) tests can identify alcohol metabolites for up to three to five days after use. Saliva tests have a similar window to blood and breath—usually 12 to 24 hours—because alcohol is present in oral fluids while it circulates in the bloodstream. Hair tests have the longest detection window, identifying alcohol metabolites like EtG or FAEE for up to 90 days, based on average hair growth rates. These detection windows are established through clinical research and forensic testing, where alcohol levels are tracked over time following controlled consumption.

What Affects Alcohol Detection Times in Your System?

Several factors affect how long alcohol can be detected in your system:

Amount of alcohol consumed: More drinks mean longer detection times.
Type of alcohol: Stronger drinks like liquor are processed differently than beer or wine.
Body weight and composition: People with higher body fat may retain alcohol longer.
Metabolism: Faster metabolisms clear alcohol more quickly.
Age: Older adults may process alcohol more slowly.
Sex: Women generally have higher BAC levels than men after drinking the same amount.
Liver health: A healthy liver metabolizes alcohol more efficiently.
Hydration and food intake: Eating before or while drinking slows alcohol absorption.
Medications: Some drugs interfere with how alcohol is processed.
Type of test used: Blood, breath, urine, saliva, and hair tests each have different detection windows.

How Long Does it Take for Alcohol to Leave Your Body Completely?

It typically takes about one hour for the body to metabolize one standard drink, but the total time for alcohol to leave your body completely depends on how much you drank and individual factors like metabolism, weight, age, and liver health.

For example, if you had five standard drinks, it could take about five to seven hours for all the alcohol to be processed and cleared. However, traces of alcohol metabolites, such as EtG, can remain in your system for up to 3 to 5 days and be detectable in certain tests.

Even if you no longer feel intoxicated, small amounts of alcohol or its byproducts may still be present in your system and show up on tests.

Can You Flush Alcohol Out of Your System Faster?

No, you cannot flush alcohol out of your system faster. The liver metabolizes alcohol at a fixed rate of about one standard drink per hour, and this process cannot be sped up by drinking water, coffee, taking cold showers, or exercising. While staying hydrated and resting can help you feel better, they do not speed up how quickly your body breaks down or eliminates alcohol. Ultimately, only time allows alcohol to leave your system completely.

Alcohol Metabolism in the Body

When you consume alcohol, it enters your bloodstream through the stomach and small intestine. This absorption happens quickly, especially if you drink on an empty stomach. Once in the bloodstream, alcohol travels throughout the body and affects various organs, including the brain. The majority of alcohol is broken down by the liver through a two-step metabolic process. First, the enzyme alcohol dehydrogenase converts alcohol into a toxic compound called acetaldehyde. Then, another enzyme called acetaldehyde dehydrogenase breaks that down into acetate, a less harmful substance. Acetate is eventually converted into water and carbon dioxide, which are removed from the body through urine, breath, and sweat. Around 90 to 95 percent of alcohol is metabolized this way, while the remaining 5 to 10 percent exits the body unchanged. The liver processes alcohol at a steady rate of about one standard drink per hour. There is no way to speed this up with water, caffeine, or cold showers. Only time can fully eliminate alcohol from your system.

The longstanding understanding is that your body will metabolize one alcoholic drink per hour. This rule leads to the recommendation that in any given sixty-minute period, a person should not have more than one “unit” of an alcoholic beverage, which is the equivalent of one bottle of beer, one five-ounce glass of one, or one-and-a-half ounces of distilled spirits. This rule is a general guideline, however, and it is not an accurate predictor of how long alcohol will stay in your body. That length of time and the factors that affect it are complicated and will vary dramatically from person to person.

The primary factors are how much and how often a person drinks, the type of alcohol they drink, their age, genetic background, family history, and general physical health. Alcohol is a foreign substance that is toxic to a person’s body at high doses. Your body works to metabolize toxins, and a healthier person or someone who has a genetic predisposition for a faster metabolism of alcohol will rid himself of this toxicity faster than an unhealthy or aged person.

Each unit of an alcoholic beverage contains approximately 0.6 fluid ounces of pure alcohol. A person’s bloodstream absorbs alcohol very quickly, often in less than ten minutes after that person begins to consume a drink, with peak absorption occurring at roughly 40 to 60 minutes after the drink is consumed. A person will therefore begin to feel the effects of an alcoholic beverage quickly, but will not experience the full effects of the alcohol in a single drink for up to an hour afterwards. A person who is eating while consuming alcohol will experience slower alcohol absorption as their body works to metabolize both the food and the alcohol simultaneously.

Some amount of that 0.6 fluid ounces of pure alcohol will remain in the bloodstream of most people for up to two hours after a single unit of an alcoholic drink is finished. Because the full effects of a single drink are not experienced for up to an hour after it is consumed, a person who drinks very quickly will be at a greater risk for alcohol poisoning, in which the concentration of alcohol in their body overwhelms their body’s ability to metabolize and flush the alcohol out. When that happens, a person might begin to act incoherently, lose consciousness, vomit, or lose control of basic metabolic functions.

The amount of alcohol in a person’s body is typically represented by a measure of their blood alcohol concentration, or “BAC”. An average person’s body will metabolize alcohol at a rate of .015 of BAC per hour. A person with a BAC level of .08, for example, will continue to have some trace of alcohol in their system for more than five hours after they reaches that level (i.e. .08 divided by .015 equals 5.33). Again, this formula represents an average across a large population of drinkers, and it is not an exact measure of how long alcohol will stay in the bloodstream of any specific individual.

These guidelines and averages are most useful in helping a person to manage or monitor the amount of alcohol in his system. For example, a person might estimate that his BAC will be at a maximum of .045 after he consumes three units of alcoholic drinks in two hours. At that point, he will know that there will be traces of alcohol in his system for three more hours.

Los Angeles Based Alcohol Addiction Recovery Center

Harmony Place provides a comprehensive spectrum of luxury residential care, catering to individuals seeking alcohol addiction treatment in Los Angeles, CA. From initial detoxification to transitional living, our programs are designed to support those grappling with alcohol use disorders. Understanding the complexities of alcoholism, we offer personalized treatment plans, supported by a dedicated team of professionals, to guide individuals on their journey to recovery. Our approach ensures that every step of the recovery process is addressed with care and precision, making it possible for individuals to reclaim their lives and achieve lasting sobriety.

For those who are addicted to alcohol, accessing quality treatment is crucial. At Harmony Place, we facilitate Cigna alcohol rehab treatment, incorporating evidence-based therapies and integrated healing practices to foster comprehensive recovery. Our commitment to excellence extends to offering a supportive and nurturing environment, where clients can focus on healing without distractions. We understand that the financial aspects of treatment can be a concern, which is why Harmony Place takes alcohol rehab insurance from a range of providers, including BCBS, Aetna plans, Optum, and Anthem rehab cover, to help ease the financial burden on families and individuals.

Navigating the path to recovery involves understanding the average cost of alcohol addiction treatment and exploring all available financial options for paying for alcohol recovery treatment. By offering a thorough alcohol addiction assessment, we ensure that each client receives a customized plan that meets their unique needs. Harmony Place is dedicated to making recovery accessible and affordable, providing clarity on alcohol rehab insurance coverage alongside compassionate care. If you or a loved one is struggling with alcoholism, reach out to us today to discover how our programs can offer a transformative and hopeful path to a healthier future.

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I’ve been to 4 treatment centers before Harmony Place, and I can tell you without a single doubt that this is the absolute best by FAR. The past ones were luxury Residential Treatment centers that just treated every single client the same not tailoring to each individual, and were basically just in it for the money, dropping the ball each time. I can also tell you that I’ve never met the CEOs, but here, David comes to the facility almost every single day, and makes sure he get to know every individual here. He is incredibly kind, and was even willing to transfer me to another facility with a higher level of trauma therapy due to me having a lifetime of trauma and PTSD that just is going to take a long time to tackle. He truly cares about all of the clients having all of the tools that we need before getting released to the real world. No more of other CEO would ever be willing to miss an opportunity at making more money and even paired with my IMPECCABLE case manager to find a different facility that was more trauma based. My case manager, Sam, goes absolutely above and beyond in every single aspect. She makes sure you have a smooth transition into aftercare, provides out of this world advice when it comes to sobriety, and takes the time out of her day to make sure that FMLA and short-term disability are completely taken care of during your stay. I’ve never met a case manager that could ever compare to Sam. Ever. I feel lucky to have met her, genuinely. Marissa, my therapist, is SO SWEET, actually listens to you, and provides advice and therapy tailored to each individual’s experience. She’s handled every mood I’ve been in, never judged me, and allowed me to feel safe enough to tell her things I’ve never told any person or therapist in my 29 years of life. I’ve been going to therapy for the past 15 years, and none of those therapists even come close to how amazing she is. I’ve been to 4 other treatment centers in my life and none even come close to Harmony Place. The facility is clean, organized, and high-end. I would recommend Harmony place to my family, friends, and anyone seeking treatment. I feel SO BLESSED to have landed in their hands. THANK YOU TO EVERYONE IN THE CLINICAL STAFF BEYOND WORDS. I love you guys ❤️❤️❤️❤️❤️❤️. I feel more confident than ever in my Recovery.

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Where to begin.. Harmony is a place that will forever be a part of my story as the first step in my recovery journey. I’m so grateful for this program. The staff is very friendly, and many of them understand what addiction is like, for they themselves have recovery stories of their own. They have an awesome team of therapists, group facilitators, nurses, RA technicians, medical and health professionals, a wonderful case manager for aftercare that cares deeply for your next steps; making sure you are set up for success. They have a wonderful admissions team (shoutout to Marielle who was so kind and understanding of my messed up situation). Everyone is very relatable and friendly. They invest heavily in the importance of diet and nutrition too - there’s a full time professional chef. I gained all the weight I lost and wanted back in the first two weeks lol. On top of the intensive programming they do throughout the day, they take us out to experience various kinds of outside groups to get a taste of the real world, and also take us on social outings during the weekend. If you’re serious about getting better this place will meet you where you’re at and prepare you to launch with a renewed mind and heart.

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I can't begin to explain just how amazing Harmony Place is. In fact, when we sit down with the owner, Jeff, and clinical director, David, on Monday mornings to have a house meeting, they ask us what they could be doing better. A bigger blender for smoothies is the ONLY thing we could come up with. Let me begin by addressing some negative reviews. If you notice many of them are from people, or are referring to people who have been asked to leave. It is because of harmony places protection of their clients that provide ideal conditions for healing and progress. There is a screening process that it is implemented where they make sure the clients they admit are ready to start a life of sobriety. Some people slip through the cracks. Some people find out a few days or weeks in that they've changed their minds. Some are inappropriate and break rules. It happens. When Harmony Place ask people to leave, It's because they are protecting the people who are here that want treatment. In effect, they're providing exactly what I needed for a genuine start to recovery. When I began my search for a treatment center, my requirements were that the facility's provide an environment in which its residents all want to be there and that it is ethically ran. I got that and so much more at Harmony Place. As well as a structured routine, they also provide a confidential and nurturing environment where one feels safe and where profound healing can begin. Their program offers a sound foundation where further progress in sober living is almost guaranteed. In group meetings, we enjoy getting to know ourselves again and with deeper understanding about why we are the way we are. We are provided with skills to handle real life. Its here that I've come to understand that its not addiction that has driven me to make a mess of my life. It is the trauma that I endured and not processing it correctly that lead to poor thinking patterns that opened the door to addiction resulting in poor life management. So we start at the bottom. Trauma. They help us understand that trauma has led to our own toxicity, what that trauma looks like and how to get out of our own way. Process groups help us learn how to take accountability and foster healthier relationships. I learned here that changing the way I think is absolutely possible and imperative to the healing process. Harmony Place offered me hope when I previously felt I was unfixable and a support team that truly loves me. Even after I leave here, I have contacts that almost demand I keep in touch and an alumni meeting where I can return to the facility on Thursday nights. I wasn't a 12 stepper when I came here but my first experience with it was not one where I was ready to stop using. I understand now that the steps will work for me. It's certainly is not the only modality that they teach. In one group, we are provided an opportunity to sit with a recently retired medical doctor to just ask questions. Another is with a nutritionist. There are a handful of people IN recovery that come to lead groups that are all accredited highly specialized where I felt understood and not judged. The knowledge I have gained here is life changing. It is also versatile and relatable for all types of people. my favorite group was dialectical behavioral therapy. There are breathing classes and sound bath groups and I started doing yoga in the morning. There's a dharma meeting they take you offsite that focuses on Buddhist values. A fantastic onsight chef provides three meals and you can have special requests. We facilitated our own Movie nights during free time. I cant forget to mention you get your own one on one meetings with your assigned primary therapist and there is comprehensive medical support complete with 24/7 nurses and a doctor that shows up throughout the week. If this is what you need to recover and you have mediCAL, cancel your mediCAL and get insurance Harmony Place accepts if you can. There are people to help you with that as well. Just call. Many, many thanks to the staff. ✔️Another life changed.🙏

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