How Long Does Alcohol Stay in Your System?

• Alcohol Addiction, Detox

Medically reviewed by Dr. Jawaun Lewis. Last reviewed: November 13, 2026.

Maybe you’re wondering if it’s safe to drive the morning after a night out. Maybe a doctor has ordered a test. Or maybe you’ve started to worry about what regular drinking is doing to your body. Whatever brought you here, the question is the same: how long does alcohol stay in your system? The answer depends on how much you drank, how your body processes alcohol, and which kind of test is used.

If you’re asking because drinking has started to feel hard to control, you’re not alone. Help may be closer than you think. At Outpatient Detox Near Me in Bartlett, Tennessee, our medical team helps people stop drinking safely while they keep up with work and family. Schedule a confidential detox assessment today.

Learn more about our outpatient alcohol detox in Tennessee or verify your insurance now.

Key takeaways

• Alcohol itself leaves your bloodstream within hours. Byproducts can be found much longer.

• Time is the only thing that lowers your blood alcohol concentration. Coffee, cold showers and walking don’t.

• If you drink heavily and often, stopping suddenly can be dangerous. Get medical help first.

• Call 911 for signs of alcohol poisoning. Never leave someone to “sleep it off.”

How Long Does Alcohol Stay in Your System? The Short Answer

Alcohol itself leaves your bloodstream within hours. The byproducts your body creates as it breaks alcohol down can be detected much longer.

| Test | What it looks for | General detection window

| Breath | Alcohol in your body right now | Several hours after drinking

| Blood | Alcohol currently in your bloodstream | Several hours after drinking

| Urine (standard) | Alcohol itself | A short window after drinking

| Urine (EtG and EtS) | Byproducts of alcohol | About 1 to 3 days, and up to about 4 days after heavy drinking

| Hair (EtG) | An alcohol byproduct stored in hair | A longer stretch, depending on the length of hair tested

These are general ranges, not guarantees. Every body is different. The amount you drank and how often you drink both matter.

How Your Body Processes Alcohol

When you drink, alcohol moves into your bloodstream and travels throughout your body, including your brain. Most alcohol is broken down by the liver. A small amount leaves the body unchanged through your breath and urine. That is why breath and urine tests can measure it.

Here is the key point. Your liver can only process a certain amount of alcohol each hour, no matter how much you drink. When you drink faster than your liver can keep up, alcohol builds up in your blood. Your blood alcohol concentration (BAC) keeps climbing.

It helps to know what counts as one drink. In the U.S., a standard drink contains about 14 grams of pure alcohol.

| Drink | Amount that equals one standard drink | Typical alcohol strength

| Regular beer | 12 ounces | About 5%

| Malt liquor | 8 to 9 ounces | About 7%

| Wine | 5 ounces | About 12%

| Distilled spirits | 1.5 ounces (one shot) | About 40%

Many real-world pours are bigger than this. A large glass of wine or a strong mixed drink can easily count as two drinks or more.

Alcohol Detection Times by Test Type

Different tests look for different things. Some measure alcohol itself. Others look for byproducts that stick around after the alcohol is gone.

• Breath tests measure the alcohol in your body right now. They reflect recent drinking, usually within the past several hours.

• Blood tests measure the alcohol currently in your bloodstream. Like breath tests, they mainly reflect the past several hours.

• Urine tests: standard tests detect alcohol itself for a short window. EtG and EtS tests look for byproducts and can detect drinking from a day or more earlier.

• Hair tests look for an alcohol byproduct called EtG. They can reveal drinking over a long period, depending on the length of hair tested.

Testing positive is not the same as being impaired. A urine test can show drinking from days ago, long after you feel sober. Labs also interpret these results carefully. Everyday products like hand sanitizer and mouthwash can cause low positive EtG results.

Factors That Affect How Long Alcohol Stays in Your System

No two people process alcohol the same way. The rate depends partly on liver enzymes, which vary from person to person and are shaped by genetics.

| Factor | How it matters

| How much you drink | More alcohol takes longer to clear.

| How fast you drink | Drinking quickly pushes your BAC up faster than your liver can bring it down.

| Biological sex | Women tend to reach a higher BAC than men after drinking the same amount.

| Body size | A smaller body generally reaches a higher BAC from the same number of drinks.

| Food | Eating before or while drinking can slow how quickly alcohol enters your bloodstream.

| Medications and other drugs | Combining alcohol with opioids or sedatives intensifies their effects and can lead to overdose even with moderate drinking.

Can You Sober Up Faster?

No. Time is the only thing that lowers your BAC. Coffee may make you feel more alert, but it does not remove alcohol from your blood. A cold shower won’t either.

The National Institute on Alcohol Abuse and Alcoholism (NIAAA) is clear on this point. In its alcohol overdose fact sheet, NIAAA says cold showers, hot coffee and walking do not reverse the effects of an alcohol overdose, and can actually make things worse.

After a night of heavy drinking, you may still have alcohol in your system the next morning. Feeling okay does not always mean you are okay to drive.

Know the Signs of Alcohol Poisoning

Drinking a large amount in a short time can lead to alcohol poisoning, also called alcohol overdose. The risk is higher with binge drinking. Binge drinking typically means 4 or more drinks for women or 5 or more for men in about 2 hours.

Call 911 right away if someone shows these signs:

• Mental changes: confusion, stupor, or being unable to stay awake or wake up.

• Breathing problems: slow, shallow or irregular breathing.

• Physical signs: vomiting, seizures, a slow heart rate, clammy or bluish skin, or a low body temperature.

Don’t wait for every symptom to appear. Never leave the person alone to “sleep it off.” A person who has passed out from drinking can still die.

Why Quitting Alcohol Suddenly Can Be Dangerous

Here is something many people don’t realize. When someone drinks heavily and often, the body adapts to having alcohol around. When the alcohol leaves their system, withdrawal can begin. Symptoms can start within 6 to 24 hours after the last drink for people who have been drinking heavily.

| Early withdrawal symptom | What it can look like

| Shakiness | Tremors, often in the hands

| Anxiety and irritability | Feeling on edge, restless or easily upset

| Sleep problems | Trouble falling or staying asleep

| Stomach symptoms | Nausea or vomiting

| Physical stress | Sweating and a fast heartbeat

For some people, withdrawal becomes severe. It can lead to hallucinations, seizures or delirium tremens (DTs). That is why NIAAA urges people who drink heavily to get medical help to plan a safe recovery. Stopping suddenly on your own can be life-threatening. You can also learn more about the alcohol withdrawal timeline.

When to Get Help for Alcohol Use

It can be hard to tell when drinking has crossed a line. Clinicians use criteria from the DSM-5 to diagnose alcohol use disorder. You don’t need a diagnosis to ask for help, though.

| Sign it may be time to talk with a professional | What it looks like

| Drinking more than you planned | One drink often turns into several.

| Trouble cutting back | You’ve tried to drink less but couldn’t stick with it.

| Higher tolerance | You need more alcohol to feel the same effect.

| Withdrawal symptoms | You feel shaky, sweaty or anxious when you go without a drink.

| Problems at work or home | Drinking is affecting your job, health or relationships.

At Outpatient Detox Near Me, every patient starts with a medical assessment. We review what you’ve been drinking, how long you’ve been drinking, and any past withdrawal. If withdrawal can be safely managed with daily monitoring, you can detox while sleeping in your own bed. If you need a higher level of care, we will tell you and help you get placed. If you’re also taking Suboxone, learn how long Suboxone stays in your system.

| Service | What it is

| Alcohol Detox | Symptom checks at every visit, with medications to manage withdrawal.

| Outpatient Detox | Daily visits for vital signs and medication adjustments, with your nights at home.

| Medication-Assisted Treatment | Medications that can support your recovery after detox.

| Cognitive-Behavioral Therapy (CBT) | Helps you spot the thoughts and triggers that lead to drinking.

| Dialectical Behavioral Therapy (DBT) | Builds skills for handling stress and strong emotions without alcohol.

Detox is the first step, not the whole journey. Before you finish, we build a continuing care plan and schedule your next appointment.

Higher-risk history: if you’ve had withdrawal seizures or DTs in the past, you should be evaluated for inpatient detox. Call us or go to the nearest emergency department. If you are in crisis, call or text the 988 Suicide & Crisis Lifeline.

Contact Us For Support

Wondering how long alcohol stays in your system is often the first sign that something needs to change. That realization takes courage. You don’t have to face what comes next alone.

Our Bartlett clinic sits about 10 minutes from downtown Memphis. We can typically complete a phone screening and schedule your assessment within 24 hours. Call us now at (866) 655-2113. You can also verify your insurance now and take the first step toward a safer detox.

Sources

1. National Institute on Alcohol Abuse and Alcoholism. What is a standard drink?

2. National Institute on Alcohol Abuse and Alcoholism. Understanding the dangers of alcohol overdose.

3. National Institute on Alcohol Abuse and Alcoholism. Alcohol Treatment Navigator.

4. 988 Suicide & Crisis Lifeline. 988lifeline.org.

This content was medically reviewed by Dr. Jawaun Lewis on November 13, 2026. It is for educational purposes and is not a substitute for medical advice, diagnosis or treatment.