Prime Health Blog


How long marijuana can be detected within the body?


Tetrahydrocannabinol, the chemical in marijuana that makes people feel “high,” may stay in the body for several days or even weeks.

The period of time this compound remains in the body or continues to show in a drug test depends on a number of factors. These include:

  • Just how much body fat an individual has
  • How often they have the drug
  • Just how much someone smokes

Drugs such as alcohol may completely vanish from the body in only a few hours. In contrast, marijuana lingers much longer.

Drug tests can discover tetrahydrocannabinol, or THC, in blood, urine, and hair for several days following use, while saliva tests can only find THC for a few hours.

This is because of the way the body metabolizes THC. This means that it binds to fat in the body, which increases the length of time it takes for someone to get rid of THC completely.

Marijuana Detection windows.

Research on the amount of time that a test can detect marijuana indicates a vast assortment of averages.

Research from 2017 quotes a detection window to get one marijuana cigarette of approximately 3 days.

Exactly the exact same study emphasizes that detection windows change and depend on just how often a person smokes.

It showed:

  • For someone smoking marijuana for the first time, evaluations might detect it for approximately 3 days.
  • In someone who smokes marijuana three or four times each week, the detection window is 5–7 times.
  • For people who smoke marijuana once a day or more, tests might detect it within their own system for 30 days or more.

Detection windows additionally depend on the type of test an individual undertakes. General estimates for various marijuana tests are as follows:

  • Urine tests may detect marijuana in the urine for approximately 3–30 days after usage.
  • Saliva tests can detect marijuana for about 24 hours following use. Some saliva tests have detected marijuana for up to 72 hours.
  • Hair evaluations are the most sensitive tests, discovering THC to get up to 90 days after use.

However, these evaluations are examining the oil in skin that transfers to hair, and so they may sometimes demonstrate a false positive.

Someone who comes into contact with a THC user may, theoretically, test positive on a hair test.

How much do you have to smoke to fail a drug test?

Drug tests may detect relatively tiny amounts of THC, and the amount of THC in certain marijuana cigarettes fluctuates.

However, little research has examined exactly how much an individual has to smoke to fail a drug test.

Studies consistently find that frequent weed users are more likely to fail drug tests than infrequent users.

A 2012 study in the journal Clinical Chemistry examines marijuana users smoking a single cigarette with 6.8 percent THC.

Employing a highly sensitive pee test, researchers found THC from the urine of 100 percent of regular consumers and 60–100 percent of infrequent users.

A 2017 research report on testing where hair samples from 136 bud users reporting light, heavy, or no use of marijuana.

As an example, researchers cut hair into 1-centimeter sections to test for exposure of around a month prior.

Some 77 percent of heavy users and 39% of light users generated positive tests. No non-users had favorable test results, indicating that false positives in hair tests are relatively rare.

Factors that affect detection:

Numerous factors affect whether a test finds marijuana, including the following:

Test sensitivity

More sensitive tests can detect lesser doses of marijuana.

THC dose

Marijuana drug tests look for THC, not bud. Hence the quantity of THC that an individual consumes is the significant element.

The effects of THC are accumulative. This means that someone who smokes several times over a few days has swallowed a higher THC dose compared to someone who smokes after, and thus they are more likely to test positive.

The potency of each dose of THC also matters. Without sensitive lab equipment, an individual can’t reliably determine the potency of their marijuana.

The Way “high” a person feels is also not a trusted measure, because many factors other than THC dose can intensify or weaken this feeling.

Body Fat

Since fat shops marijuana, individuals with higher body fat concentrations can metabolize bud more slowly than an individual with less body fat.

Body mass index (BMI) is 1 way to judge body fat. But since weight, and consequently BMI, raise with muscle mass, BMI is not a perfect measure of body fat.


Usually, females have more body fat than males. It follows that females may metabolize marijuana slightly more gradually.


Dehydration increases concentrations of THC from the body. While drinking a lot of water is unlikely to affect a drug test appreciably, severe dehydration might.


Exercise will not significantly change the rate at which the body metabolizes THC.

A little study of 14 regular marijuana users assesses the consequences of 35 minutes of workout on a stationary bike.

The researchers think that exercise may cause fat cells to release THC. In their outcomes, individuals with higher BMI had more substantial increases in THC levels.


To get a drug test to be negative, the body must eliminate THC in the machine, in addition to metabolic compounds that have links to THC.

Individuals with faster metabolisms typically eliminate THC more quickly than people who have slower metabolisms.

How to get weed out of your system faster:

Finally, there are only two approaches that work for this, and they’re diminishing the concentration of THC in the direction and speeding up the metabolism.

Proper hydration can prevent a drug test from demonstrating unusually large THC concentrations.

For individuals whose test results are around the border of positive and negative, this usually means that being dehydrated can increase the odds of a favorable outcome.

There is no reliable way to accelerate metabolism. Exercise might help the body metabolize more THC, but exercising too close to a test may also lead to a positive outcome.

The one most significant element is the time in the previous exposure to the period of testing.

Bottom Line:

There is not any method to accurately forecast the amount of time it takes an individual to metabolize marijuana and remove it from their own bodies.

For almost all people, bud must disappear or be very low in concentration in 30 days. For infrequent users, it may require 10 weeks or less for marijuana to leave the body.

Ask your friends and loved ones for support.

If you’re feeling anxious or depressed, consider joining a support group or seeking counseling. Believe in your ability to take control of the pain…

Hope you find this article helpful enough to give motivation. Kindly read our more articles and subscribe to us for staying updated on our all-new articles.

You can also read more health-related articles by subscribing and liking us on Facebook and Instagram. Feel Free to leave comments below for any suggestions or your views on it.




Leave a Reply


1 thought on “How long marijuana can be detected within the body?”

  1. Pingback: Normal Blood Oxygen level: How to increase oxygen in blood?

Leave a Comment

Your email address will not be published. Required fields are marked *