How Long Is CBD Detectable In Urine? [ Update In 2021 ]


how long is CBD detectable in urine? [ update in 2021 ]

Research associated with the detection window of cannabinoids in urine spans several decades.While these studies have produced a significant amount of valuable information about marijuana elimination, older studies (primarilyt hose performed in the 1980’s) have also yielded some unintended consequences aspertains to the detection window. The technologies of drug testing and the methodologies used in drug detection have advanced rapidly in recent years. Consequently, cannabinoid detection studies performed twenty years ago (employing older immunoassays methods)utilized drug testing methods that are eitherno longer in widespread use or assays that have been extensively reformulated.

CBD comes from cannabis, a family of plants. Cannabis plants contain hundreds of naturally occurring compounds, including:





There isn’t a simple answer for how long CBD stays in your system. It depends on a number of factors, such as how it was administered, the dosage, and the frequency of use. 


There are many different factors to consider that influence how long CBD stays in your system as well as how it affects you. How long it lasts and is detectable is not the same for everyone:


Physical factors

Last time it was taken


Freuency of use

your Body Mass Index (BMI) influences how quickly it is metabolized. The higher your body mass and weight, the longer it will take to leave your system.


CBD is fat-soluble, meaning it’s stored in your body’s fat cells rather than the water cells. Therefore, your Body Mass Index (BMI) influences how quickly it is metabolized. The higher your body mass and weight, the longer it will take to leave your system. 

Your method of intake can influence how it affects you as well as for how long it lasts. Popular methods and forms of CBD include:




Dietary supplements


Dried flower

If you smoke dried flower CBD or use a vape cartridge, the CBD enters your blood stream within seconds. Therefore, brain effects associated with CBD occur the quickest in this manner.


If you take a dietary supplement or edible that contains CBD, the effects won’t be felt immediately. Your metabolism and diet can influence how soon you feel the effects. However, symptoms are often felt within an hour of digesting it.


Regardless of how you take it though, the effects can typically last between one to three hours. 


But does the duration of its effects influence how long it stays in your system for?


The half-life of CBD is between 18 and 32 hours. However, it can be detectable on lab tests for much longer than that. Most drug tests screen for THC, rather than CBD. THC is the main component of marijuana. However, as we mentioned, CBD contains trace amounts of THC.


The great thing is usually drug screenings don’t look for CBD in the blood, urine, saliva or even hair.


It usually takes 20 to 30 minutes for CBD to have the intended effect after it’s taken into the body that includes the way you were administered, the amount, whether you had eaten and your weight.

Some tests are more effective at detecting THC and for longer periods of time. The type of drug screening you’re administered – and how long after you last took CBD – could influence whether it’s detectable. CBD products are not regulated by the FDA, it’s possible that you could be taking CBD that is mixed with other cannabinoids, which could increase detectability.


Urine tests are the most popular and common method of drug screening for employers. these metabolites can show up on a urine test anywhere between three days to two weeks after the last time taken. Those numbers may vary depending on the frequency of use and the amount taken. However, most urine tests return as positive, if one consumes more than 2000 mg of legal CBD products a day. If your concern is about the professional repercussions of using CBD oil, discussing these concerns with the HR representative or consulting the specific CBD use laws in your state may help.


Urine drug testing is the most common way of workplace testing for specific drugs because it is not invasive, and samples are easy to collect.


Hair tests are known for being able to detect drugs for an extended period of time. These tests can detect the THC metabolites in CBD for as long as three months post-administration.


Although blood tests are not nearly as common as urine tests for screening for CBD and cannabinoids, they can be used to detect THC metabolites. the drug components could be detected within minutes after you take it and could last for up to 36 hours, depending on the dosage and frequency of use.


CBD should not show up on a drug test. However, because most CBD products are classified as a supplement, it is not regulated for safety and purity. This means that contamination of the CBD with THC (tetrahydrocannabinol) may and does occur, and this may show up on a drug test, depending on the cut off level of the test and other factors listed below. Concentrations of drugs in urine are usually higher than in blood and present for longer.

Main types of urine drug tests: screening and confirmatory tests. Immunoassay screening tests can be conducted on-site (point of care testing) or in a laboratory and allow large numbers of tests to be performed at once with relatively rapid results, providing an initial estimate of the presence or absence of drugs. There are three main types available, and all use antibodies to detect the presence of specific or classes of drug metabolites. Unfortunately, this can mean that substances with similar characteristics may be detected, resulting in false-positive results.


This is more likely to happen if the CBD you are buying is marijuana-derived CBD rather than hemp-derived CBD. Hemp-derived CBD is required by law to contain less than 0.3% THC, although regular daily ingestion of high doses of this may still cause THC to accumulate.


the amount of time that marijuana (THC) and its metabolites remain detectable in the urine or other biological samples:


Frequency of marijuana use (the half-life of THC is 1.3 days for an infrequent user and 5-13 days for frequent users)

Presence of interacting drugs

How much is used and the route of administration

Last time of ingestion.

Several patient factors can also affect the result, such as body mass, urine pH, urine concentration and other medical conditions such as kidney or liver disease.


the length of time marijuana (THC) is detectable in urine is:


Single-use: 3 days

Moderate use (4 times/week): 5 to 7 days

Chronic use (daily): 10 to 15 days

Chronic heavy use: More than 30 days.



 The cannabinoid detection window is a scientifically supportable, evidence-based effort to establish a reasonable and practical standard for determining the length of time cannabinoids will remain detectable in urine following the smoking of marijuana. Drug courtsare reminded that science is not black and white and that the state of our knowledge is continually evolving. While detection window benchmarks will and should guide the sanctioning process for violations of abstinent behavior, courts are urged to judge a client’slevel of compliance on a case by case basisusing all of the behavioral data available to the court in conjunction with drug testing results.In unconventional situations that confound the court, qualified toxicological assistance should be sought.