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How Long Does Marijuana Stay in Your Saliva?

09 April, 2024

A technician doing a mouth swab on a female

Roadside or workplace drug tests are becoming more common due to the rise of illicit substance use. In particular, frequent marijuana use is increasing. Authorities or employers may utilise saliva tests because of their user-friendly nature. Thus, how long does marijuana stay in your saliva is a question some people ask. The substance usually remains in saliva for 14 hours. However, this can vary depending on various factors.

Typically, individuals use marijuana for medicinal or recreational purposes. Doctors often prescribe medical marijuana to alleviate symptoms of chronic conditions such as pain, anxiety, and epilepsy. On the other hand, recreational use is more common among individuals looking to relax or experience a sense of euphoria. Nevertheless, abusing it can be detrimental. The following sections will present how frequency, metabolism, and BMI affect its detection period and the difference between heavy and moderate users.

How Long Does Marijuana Stay in Your Saliva Is Influenced by Frequency of Use

The frequency of marijuana use significantly influences how long does marijuana stay in your saliva. When it comes to cannabis drug testing, the substance remains detectable in saliva samples for different durations. It would depend on how often people consume it. Marijuana can last from 14 hours to 48 hours after the last intake of light users. Hence, they can eliminate the substance within two days.

Meanwhile, daily users can extend the window of detection from three days to one week. The reason is that heavy users have higher levels of THC in their system. Consequently, it takes longer to clear out of the body. Nevertheless, factors like hydration levels can also impact how long cannabis stays in saliva.

In addition, different types of drug tests may have various sensitivities. Thus, this can also affect the detection time of marijuana. For instance, urine tests have a lengthier detection window than oral fluid or saliva testing. However, hair follicle tests have the longest detection period, as they can identify cannabis use for up to 90 days after the last consumption.

Dosage and Potency of Marijuana Consumed

  • Dosage: The amount of cannabis people take affects its detection window. Larger doses of about 100 milligrams or more can remain in saliva for up to 72 hours. In contrast, it is only identifiable for a few hours if they consume smaller doses of around 10 milligrams. The reason is that a higher dosage leads to more marijuana concentration.
  • Potency: Refers to the level of THC present in the plant. Higher potency strains, such as those with a high THC content, tend to stay in saliva for a longer duration than lower potency strains. This is because higher-potency marijuana contains more THC.

A professional conducting a saliva test on a woman

How Long Does Marijuana Stay in Your Saliva Is Affected by Metabolism and BMI

People asking how long does marijuana stay in your saliva must know that metabolism and BMI can affect it. Metabolism refers to the chemical processes that occur within the body. These include the breakdown of substances. Those with higher metabolisms tend to process THC more quickly, resulting in shorter detection times in their saliva. Conversely, those with slower metabolisms may retain traces of marijuana in their saliva longer.

Body Mass Index, or BMI, is another element influencing how long cannabis remains in saliva. It is a measure of body fat based on height and weight. THC is fat-soluble, storing fatty tissues throughout the body. Therefore, people with a higher BMI may retain THC for longer periods as it takes longer for their bodies to metabolise and eliminate the fat-soluble compound.

Some studies suggest that the detection window for marijuana in saliva is generally shorter than in urine testing or blood tests. However, it is essential to understand that these timeframes can vary significantly from person to person.

Understanding How the Body Processes Marijuana

The human body processes marijuana in complex ways. Once people consume the drug, its active ingredients enter the bloodstream. Then, it transports to various organs. The primary pathway for THC metabolism occurs in the liver. It breaks the drug down into metabolites of cannabis. The body can store these in body fat cells.

THC binding to specialised protein receptors in the brain and altering neurotransmitter release primarily cause the psychoactive effects of marijuana. As the body metabolises and eliminates THC, its effects gradually diminish. However, THC metabolites can be detectable in various body fluids, such as blood or urine samples, for an extended period.

A person rolling up a paper with drugs

How Long Does Marijuana Stay in Your Saliva – Occasional vs. Chronic Users

How long does marijuana stay in your saliva is a question people may ask, whether chronic or occasional users. The reason is that positive drug tests can have implications. Occasional users are those who use marijuana infrequently. They may only use it once in a while or on special occasions. On the other hand, chronic users consume marijuana regularly. These people may do so daily or multiple times a week.

Infrequent users are more likely to have marijuana stay in their saliva for a shorter amount of time than frequent cannabis users. It remains in oral fluid samples for 14 to 72 hours after intake. The reason is that the body rapidly metabolises and eliminates the active compound within a day or two. However, the exact detection window may still vary.

Chronic cannabis users can have the substance in their saliva for a longer period of time. Continuous use can lead to the accumulation of THC in the body, which can prolong detection times. Workplace or roadside saliva tests can identify the drug in heavy cannabis users for up to a week. However, authorities must be cautious about false positives.

Types of Marijuana Intake

The type of intake is another crucial factor affecting the window of detection for cannabis in oral fluid or saliva samples. Smoking or vaping marijuana leads to a faster absorption rate than other methods. Consequently, this can result in a shorter detection window.

On the other hand, consuming cannabis orally can result in a slower absorption rate and a longer window of detection. Some examples of this intake type are through edibles or tinctures. Cannabinoids in marijuana must first pass through the digestive system before entering the bloodstream, which can take longer compared to inhaling smoke or vapour.

Conclusion

Several factors influence how long does marijuana stay in your saliva. For instance, the frequency of use plays a significant role. Chronic cannabis users experience longer detection times than non-frequent users. Thus, frequent cannabis users are more likely to have traces of marijuana in their saliva for a longer period. The window of detection for cannabis can last for a week. Those who receive positive tests may face consequences such as losing their job or facing legal issues.

Metabolism and BMI can also impact the duration. Individuals with faster metabolisms or lower BMIs tend to eliminate the drug from their system more quickly. Nevertheless, the exact detection window of oral fluid or saliva tests may not be accurate. This is because of other external and individual factors. By taking these factors into account, users can make more informed decisions and take the necessary precautions to avoid potential consequences associated with marijuana use and testing.

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