How Long Does Methamphetamine (Meth) Stay in Your System

How Long Does Methamphetamine (Meth) Stay in Your System Addiction Drug Use Meth Print How Long Does Methamphetamine (Meth) Stay in Your System? Methamphetamine in Your Blood, Urine, Hair, Saliva By Buddy T facebook twitter Buddy T is an anonymous writer and founding member of the Online Al-Anon Outreach Committee with decades of experience writing about alcoholism. Learn about our editorial policy Buddy T Medically reviewed by Medically reviewed by Steven Gans, MD on January 26, 2020 Steven Gans, MD is board-certified in psychiatry and is an active supervisor, teacher, and mentor at Massachusetts General Hospital. Learn about our Medical Review Board Steven Gans, MD Updated on February 06, 2020 More in Addiction Drug Use Meth Cocaine Heroin Marijuana Ecstasy/MDMA Hallucinogens Opioids Prescription Medications Alcohol Use Addictive Behaviors Nicotine Use Coping and Recovery In This Article Table of Contents Expand Effects Duration Factors That Affect Detection Time Elimination Symptoms of Overdose Getting Help View All Back To Top Methamphetamine, also known under the brand name Desoxyn or street names meth, crank, crystal, glass, ice, and speed, is a stimulant drug that speeds up the  body’s systems. After marijuana, meth is the second most popular illicit drug in the world. Methamphetamine is classified as a Schedule II drug in the United States, meaning that its considered a drug with a high potential for misuse, with use potentially leading to severe psychological or physical dependence.?? Though most often used illicitly as a recreational drug, it is also available in prescription form as Desoxyn, which is used for treating ADHD and the short-term treatment of obesity. Determining exactly how long methamphetamine is detectable in the body depends on many variables, including the type of test used, the method of use, and a persons unique physical characteristics. Methamphetamine can be detected for a shorter period of time with some tests but can be visible for up to three months in others. Verywell / Jessica Olah What to Know About Methamphetamine Use How Long Does It Take to Feel the Effects? The effects of methamphetamine begin rapidly after intravenous use or when it is smoked. The primary effects last from four to eight hours, with residual effects lasting up to 12 hours. Amphetamine (a methamphetamine metabolite) is detectable in drug tests long after the person feels back to normal. The effects of methamphetamine vary widely between prescribed therapeutic doses compared to dosages usually used by people who misuse meth. Prescription doses of 10mg to 30mg  can improve reaction time, relieve fatigue, improve cognitive function testing, increase subjective feelings of alertness, increase time estimation, and increase euphoria. However, a larger dose of meth can cause the following effects: AgitationInattentionRestlessnessInability to focus attention on divided attention tasksMotor excitationIncreased reaction timeTime distortionDepressed reflexesPoor balance and coordinationInability to follow directions What It Feels Like to Get High on Meth Driving Concerns According to the National Highway Traffic Safety Administration (NHTSA), drivers who are under the influence of methamphetamine display a wide variety of behaviors including: SpeedingLane travelErratic drivingAccidentsNervousnessRapid and non-stop speechUnintelligible speechDisorientationAgitationStaggeringAwkward movementsIrrational or violent behavior, and unconsciousness?? In the 101 cases reviewed by NHTSA in which meth was the only drug detected, impairment was attributed to distraction, disorientation, motor excitation, hyperactive reflexes, general cognitive impairment, or withdrawal, fatigue, and hypersomnolence.?? How Long Does Methamphetamine Last? The half-life of methamphetamine is an average of 10 hours. This means it takes about 10 hours for half of the ingested dose to be metabolized and eliminated from the bloodstream.  When taken orally, concentrations of methamphetamine peak in the bloodstream between 2.6 and 3.6 hours, and the amphetamine metabolite peaks at 12 hours. If meth is taken intravenously, the elimination half-life is a little longer at about 12.2 hours.?? Methamphetamine is metabolized by a liver enzyme and is excreted by the kidneys in urine. It is metabolized (or broken down) into amphetamine, and 4-hydromethamphetamine. Various testing methods have different estimated ranges of times or detection windows, during which meth can be picked up after a person has taken the drug.?? Urine Meth is typically detectable in urine for one to four days but may be detectable for up to a week after heavy, chronic use. A urine test typically shows a higher concentration of meth than other drug tests because the drugs metabolites are eliminated through urine. Blood Blood tests can detect meth most quickly after its been used, typically one to three days after last use. Saliva Meth can be detected in saliva for one to four days after the last use. Hair A hair follicle test can detect meth in your system for up to 90 days. False Positive Testing While a useful, simple, and inexpensive tool, immunoassays (one of the most common types of urine drug screen) can give false-positive results. Taking metformin (sold as Fortamet, Glucophage, Glumteza, Glucophage XR, and Riomet), which is used to treat type 2 diabetes, can result in a positive test for methamphetamine. Ritalin (methylphenidate), which is used to treat ADHD, and Trandate (labetalol), which is an alpha- and beta-blocker used to control blood pressure, can also result in a false positive for meth. Antihistamines, nasal inhalers, and cold medicines that contain pseudoephedrine and/or promethazine as well as antidepressants (such as bupropion, fluoxetine, trazodone, and selegiline) can also produce false positives. Last but not least, ephedra-containing products may cause false-positive methamphetamine results in urine drug screens. Testing to identify specific drugs, rather than classes of drugs, is needed to confirm a positive urine drug screen for methamphetamine. To ensure clinicians can accurately interpret your drug screen results, always disclose any prescription or over-the-counter medications you are taking. Many states have passed zero-tolerance laws for driving while under the influence of methamphetamine. In those states, if a blood test shows any amount of meth at all, you can be charged with driving under the influence.Because methamphetamine remains in the system long after the effects of the drug wear off, you might feel like you are OK to drive, but can still run the risk of being charged with drugged driving if any meth shows up in a blood or urine test. Factors That Affect Detection Time The timetable for detecting methamphetamine in the human body depends on the individuals health, metabolism, age, physical activity, and frequency of use, making it difficult to determine how long meth will show up on a drug test. Overall Health Your overall health, including liver and kidney function, can play a role in how quickly meth is processed and cleared from your body. Frequency of Use People who use amphetamine very frequently will have longer detection times than those who use the drug one time. Metabolic Rate People with a high metabolism tend to process and excrete amphetamine more quickly than those with a slower metabolism. Age, activity level, and overall health can all play a role in your metabolic rate. Smoking vs. Injecting Whether you take the drug orally or intravenously can impact detection time. Injecting the drug Smoking or snorting amphetamine smoke or snort meth, it will stay in the body for a shorter amount of time than if you inject the drug. If, on the other hand, youve been prescribed Adderall and take it as prescribed, the drug will likely remain in your bloodstream for longer periods of time. How to Get Methamphetamine Out of Your System There are plenty of false claims and myths when it comes to how to pass a drug test. For example, there are false that baking soda bombs, which is a mixture of water, bleach, and baking soda, mask the presence of methamphetamine in urine. There is no proven research that this works, and further, you take an enormous health risk when you ingest any amount of bleach. The only way to get meth out of your system is to stop using the drug and allowing your body time to metabolize and eliminate it.  Staying healthy by getting regular exercise and drinking plenty of water may also help you metabolize the substance more quickly. Symptoms of Overdose One of the main reasons to be aware of how long meth remains in the system is the risk of overdose.  Here are some symptoms of a meth overdose: Difficulty breathingChest painIrregular heartbeatHeart attackStrokeSeizuresSevere agitationParanoiaExtremely high body temperatureKidney damage or failure Some of these symptoms can be life-threatening, so it is important to seek professional medical help right away if you suspect that you or a loved one may be experiencing a methamphetamine overdose. Drug Overdose Signs and Treatment Meth and Alcohol Some believe that methamphetamine can reverse some of the impairment effects of alcohol. Thats because meth may restore alcohol-induced impairment in simple repetitive tasks of short duration. However, NHTSA research has uncovered no restoration of alcohol-induced deficits of balance and steadiness. Overall, research indicates that methamphetamine is more likely to increase the impairing effects of alcohol. The substances should not be used together. The combination can also increase the risk of alcohol poisoning since people do not realize how much they’ve had to drink. Why Meth and Alcohol Is a Deadly Combo Getting Help If youre concerned about having too much meth in your system or testing positive for the drug, its likely time to seek help or consult your doctor. If you use meth heavily and/or regularly, its best to detox from the drug under the guidance of a medical professional who can guide you safely through the withdrawal and treatment process. Twenty four hours after you stop using meth, you can expect to experience symptoms of withdrawal, which can range from mild to severe, depending on the frequency of use and dependency. Some common signs and symptoms of meth withdrawal include: AnxietyFatigue and sleepinessDepressionCravingsIncreased appetite What to Expect From Meth Withdrawal If you or someone you love wants to quit using meth, there are steps you can take to get through the withdrawal process and succeed in your recovery. Start by talking to your doctor for advice and assistance, or contact the Substance Abuse and Mental Health Services Administration (SAMHSA) at 1-800-662-4357. They also have a free,  online tool  to find treatment options in your area. Symptoms of Stimulant Use Disorder