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How Long Does Weed Stay In Your System?

By: William C. Head, Criminal Defense Attorney Atlanta GA and ABA Board-Certified DUI Attorney

How long Does Weed Stay in Your System

Weed Can Be Detected Up to 180 Days After Use 

The metabolites (“burn off”products) of marijuana (THC), or “weed”, can stay in your system for up to 180 days, and can be detected by the following methods:

Urine – For up to 60 days

Blood – For up to 180 days

Hair – For up to 90 days

Saliva – For up to 24 hours

System – For 1 to 180 days

ALL ESTIMATES ARE simply that — ESTIMATES. No “detector” can give a precise number about how long THC remnants will show up in your body. Crime laboratories now have very sophisticated analysis equipment. At the end of this article, the author has given you some of the better web pages to explore for more details about marijuana testing and the many imprecise variables that have a role in estimating how long weed stays in your system.

DUI Lawyer Answers Questions About Taking a Drug Test 

In today’s world, employer drug testing and probationers involved with criminal legal matters who must comply with random testing results in about 5 million online searches a month within the United States, seeking information on how to pass a drug test. All sorts of Web queries are searched daily, with wording and phrasing that shows a common theme of not showing up positive on an upcoming drug screening. Generally, the search queries include:

  1. How long does marijuana stay in your system?
  2. How long does THC stay in your system?
  3. How long does weed stay in your blood?
  4. How long does marijuana stay in your urine?

Undoubtedly, some Internet searches are for people who are just curious, or others facing less ominous and financially risky drug tests, such as when a parent is requiring a teenager to pass a drug test at home, by use of drug test kits, and the teen looks for drug screening test information.

When determining a violation of probation, or possibly doing jail time by being in a DUI Court program or Drug Court, this information is critical.

Because marijuana use is America’s #2 drug of choice (alcohol is and always will be #1), the online inquiries about how long does weed stay in your system (or similar searches) are the focus of this article. Helping citizens who are negotiating the criminal justice system or trying to gain employment is the focus of the web page on marijuana usage, and the many variables and factors affecting metabolism.

This information is provided by an Atlanta criminal defense attorney with over 4 decades of alcohol and drug criminal cases.

“How long does marijuana stay in your urine?”  is a very important question, especially in the criminal justice system, where urine tests are the most common type of forensic testing. In an intensive probation situation, like in DUI Court or Drug Court, a first offender is trying to not have a probation violation that can compromise both the State’s first offender act, as well as trigger a possible jail or prison time. As well as being kicked out of a diversion program. Also being allowed 1st offender treatment, to obtain a criminal record restriction.

A new trend in over a dozen states for requiring welfare recipients to take and pass a drug test before being eligible to get public assistance is likely to spread, as government agencies try to decrease their spending. Plus, a roadside marijuana breath test or trans-dermal skin test will soon be on the market. Several methods of quickly detecting recent marijuana use (e.g., saliva test) are already available.

Pre-Employment Drug Testing for Marijuana

Because as many as 4 out of 5 employers in the USA now require a pre-employment drug test, America’s obsession with interdicting and punishing all involvement with drugs (including recreational drug usage) is a trend that is here to stay.

When we juxtapose this national proclivity with more states now allowing recreational marijuana use, the “shell game” of turmoil and conflict between the government and millions of citizens who say that marijuana use is much safer than alcohol use continues, and the intense debate rages on.

For applicants for new jobs, who have a keen interest in not having a positive drug screening for marijuana metabolites, investigation about how long does weed stay in your urine is a highly-searched topic.

Constant news reports about college athletes on scholarship or professional athletes following union policy by drug testing, and failing random drug tests lets us know that having to pass a drug test reaches all economic levels.

Probation Drug Test for Weed – Drug Court or DUI Court

The criminal justice system utilizes drug tests in courts that have intensive oversight and probation for those who have violated state or federal laws. The mishmash of contradictory and radically different laws (when reviewing federal laws and state laws) causes great uncertainty among citizens who use one or more types of drugs or contraband plant material.

One reason for the highly-searched phrase “how long does weed stay in your urine?”, is because the hundreds of thousands of urine drug tests being conducted for the criminal courts across America each month. In some criminal courts, a person entering a negotiated plea may be required to undergo a urine test to be eligible for diversion or being allowed to use first offender plea alternative.

Taxation and Regulation of Weed Is One Solution to Our National Debt

In a nation saddled with crippling national debt, the puritanical heritage of the nation when coupled with idiotic drug policies toward marijuana. It started in the Nixon Administration and copious misinformation about the true risks of certain recreational drugs (like marijuana), prevents implementation of a fair taxation system for cannabis CBD products.

Government control and taxation could also guarantee purity and “rating” of marijuana products quality, similar to how alcoholic beverages and tobacco products are taxed (at both the federal and state levels), and the alcohol quantity disclosed on each package for consumer protection purposes.

To begin this discussion you must realize the many variables that make such questions an unpredictable and dangerous game of Russian roulette, for those who have accepted being on probation, and under the draconian provisions of some criminal courts first offender program.

Moreover, losing a high-paying job due to a positive drug test can impact both the fired employee’s life and those who depend upon him or her for financial and family support.

If on Probation, the Best Bet Is Abstinence

Despite some remarkably thorough and helpful “general” information on marijuana usage and metabolism of THC out of your body, no true guide or calculator is going to be perfect. Due to the many possible variables that do not conform to mathematical precision in how long marijuana stays in your system.

Consider six areas of imprecision when thinking about gambling your freedom or employment by testing the precision of drug testing technology:

  1. All humans are NOT alike, and rates of metabolism and body type (e.g., skinny, fat) create wide variables in your retention of marijuana THC in fat tissue.
  2. The potency of the particular strain of weed used can cause wide variations in the time required to burn off THC, with the best potency taking much longer than “huckabee” weed (a descriptive phrase made famous by comedian Katt Williams) or another term, “schwag” weed.
  3. Precise and honest estimation of regular use of marijuana each week, for the last 4 to 6 weeks.
  4. Time passage from last ingestion of weed.
  5. The form of ingestion matters and marijuana edibles will be detected longer that smoked weed.
  6. The type of screening method being utilized for analysis, whether one of the many $1.00 drugs test kits, or over $50,000 for some high-performance liquid chromatography confirmatory testing instruments.

Other Resources on How Long Does Marijuana Stay in Your System:

Creative, interactive marijuana drug test calculator:

Another type of day-by-day weed use calculator

Federal highway safety site:

Marijuana edibles:

About the Author: DUI Marijuana Lawyer Atlanta William C. “Bubba” Head 

Atlanta criminal defense attorney Bubba Head has been a practicing criminal defense attorney for over 41 years. He is a member of, in Georgia. His law firm partners, Atlanta DUI Attorneys Larry Kohn and Cory Yager have handled more than 2,000 DUI (felony and misdemeanor) and thousands of other types of criminal law cases, with most involving alcohol or drugs (e.g., possession of weed).

The partners in Mr. Head’s law office offer FREE, professional case evaluations for anyone facing DUI drugs or DUI alcohol charges. Our DUI attorneys also represent people facing prosecution for possession of marijuana, drug trafficking or weed possession with intent to distribute charges. Plus, for probation revocation cases we represent people in upcoming revocation of probation proceedings.

Our DUI lawyer firm also handles probation revocation, FTA, DUI court and drug court cases across the State of Georgia. Call today at 404-567-5515, or email Mr. Head directly at


What Kind of Attorney Do I Need? Searching for The Best DUI Lawyer

After being arrested for DUI in Georgia, the first thing to do it identify an expert on Georgia DUI law through top attorney ratings. Look at who is BEHIND the law firm, review each of the trial lawyers’ credentials, and check out the criminal defense attorney who leads the law office. Every experienced DUI lawyer in the law firm must have full command of DUI laws and possess training in all aspects of successfully challenging the driving under the influence criminal case.

This successful defense record must include suppressing breath alcohol tests, and knowing every prior appellate decision on the Georgia implied consent law. An increasing number of drugged driving cases require that our criminal defense lawyers know how to challenge a GBI blood alcohol or drugs test. Being an INSTRUCTOR in the three NHTSA standardized field sobriety tests (SFST) is also necessary.

The best DUI attorneys in Atlanta, Georgia will offer you a FREE consultation, explain how their criminal attorneys search for a successful defense in your case, and aggressively represent clients to the maximum extent the law allows. Limit your search to DUI lawyers who have legitimate lawyer ratings and a history of proven results on knowing how to beat a DUI. If we are the criminal defense attorneys for you, ask us about our attorney payment plans.

Call our DUI defense lawyers NOW, 24-7, for an initial case review and FREE legal advice: 404-567-5515, or email our criminal justice attorneys.

Other Valuable DUI Checkpoint Links on this Site:

National DUI roadblock cases and other Checkpoint Information

Sobriety Checkpoint DUI Case with High BAC Level Won by Mr. Head

How to Locate a Checkpoint Near Me

Can you become a police officer with a DUI




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