Cannabis Timeline: Decoding How Long It Stays in Your Body

Diving into the world of cannabis, people often wonder how long THC will last or be detectable in their bodies. Whether someone is contemplating the aftermath of a one-time rendezvous with weed or a long-term relationship, understanding the timeline of how long it sticks around is a frequently asked question. Below we share some of the factors that may affect how long it could linger in someone’s system, or may affect how long someone may feel its effects. However, because everyone has a unique cannabinoid system, there is no one answer. If you have questions, please consult your medical professional. 

Understanding THC and Its Detection

What is THC and How Does It Affect the Body?

Tetrahydrocannabinol, commonly known as THC, is the primary psychoactive compound found in cannabis. It is responsible for the “high” sensation associated with marijuana use. When consumed, THC binds to cannabinoid receptors in the brain, influencing pleasure, memory, thinking, concentration, movement, coordination, and sensory and time perception. This compound is metabolized in the liver and its metabolites can remain in the body for varying lengths of time, depending on several factors.

When might someone be tested for THC detection?

THC detection testing may occur for various reasons, particularly in legal, employment, and medical contexts. Legally, the presence of THC may be tested for in a variety of instances. Some employers might test for THC to ensure workplace safety and compliance with drug-free policies. In medical scenarios, detecting THC may help in monitoring dosage for medicinal users, ensuring patient safety, and studying the drug’s pharmacokinetics.

Factors Affecting THC Detection

Body Fat and BMI

THC is a lipophilic compound, meaning it binds easily to fat cells in the body. Individuals with different BMIs may find that THC lingers in their systems at varying lengths of time. As individuals have unique cannabinoid systems, this can vary by person.

THC Dose and Frequency

The amount of THC consumed and the frequency of use significantly impacts detection times. Higher doses and more frequent usage can increase the duration THC is detectable in the body. Regular users often develop a tolerance, affecting how long it takes for THC to clear from their system compared to occasional users.

Hydration and Metabolism

Research shows that hydration and metabolic rate may play a role in affecting how quickly THC metabolites are flushed from the body. A higher metabolic rate may accelerate the breakdown of THC, leading to a shorter detection window. Proper hydration may aid in this process by facilitating the elimination of toxins through urine. Please consult with your medical professional.


Age can impact the duration cannabis stays in the body due to changes in metabolism, body composition, and organ function. As people age, their metabolism generally slows down, which can lead to a longer retention of cannabis metabolites in the body. Additionally, older adults often have higher body fat percentages, where THC is stored, potentially extending the detection time. Lastly, age-related changes in liver and kidney function can also affect how quickly cannabis is processed and eliminated.

Cannabis strains

Certain strains of cannabis can result in a longer-lasting high. Strains with higher THC content generally produce more prolonged and potent effects. Additionally, indica strains are often associated with a more relaxing and longer-lasting high compared to sativa strains, which tend to produce a more energetic and shorter-lived high. Learn more about the differences between Indica, sativa, or hybrid.

Types of Tests and Detection Times

Urine Tests

Urine tests are the most common method for detecting cannabis, capable of identifying THC metabolites for approximately 1 to 30 days after use. The duration THC remains detectable in urine largely depends on the frequency and quantity of use, with chronic heavy users potentially testing positive for at least 30 days. This varies by individual and for many, THC may show up for longer than 30 days. Please consult a medical professional for advice. 

Saliva Tests

Saliva tests are another way to detect cannabis. These tests are particularly sensitive immediately after use, detecting THC in oral fluids in frequent users for several days after consumption.

Blood Tests

Blood tests also detect THC for several hours post-consumption. Blood tests are highly effective for determining immediate cannabis impairment, making them useful in legal and road safety contexts.

Hair Tests

Hair tests provide the longest window for detecting THC, capturing traces of cannabis use for up to 90 days. This method tests for the oils in skin that transfer to hair, which can occasionally result in false positives if one comes into contact with THC users. Hair tests are particularly useful for identifying patterns of long-term, repetitive cannabis use.

The detection times for THC in various testing methods are influenced by several factors, including the type of test, the individual’s body chemistry, frequency of use, and the THC potency of the cannabis consumed.


How long does it usually take for cannabinoid receptors to normalize after stopping cannabis use?
After ceasing cannabis use, it typically takes a minimum of four weeks for cannabinoid receptors to revert to their pre-use levels. 

What is the effective duration of cannabis when ingested orally?
When consumed orally, the psychotropic effects of cannabis typically begin within 30 to 90 minutes, may peak after about 2 to 3 hours, but can last anywhere from 4 to 12 hours. The duration can vary based on the dosage and the specific effects experienced.

Does the method of consumption affect how long cannabis stays in your body? Yes, the method of consumption affects how long cannabis stays in your body. Inhalation (smoking or vaping) results in faster absorption and quicker metabolism. In contrast, oral consumption (edibles or tinctures) leads to slower absorption and prolonged metabolism.

Can secondhand smoke cause a positive drug test for cannabis?

Secondhand cannabis smoke can potentially cause a positive drug test, but it is generally unlikely under normal exposure conditions. For a positive result, a person would typically need to be in a poorly ventilated area with significant amounts of smoke for an extended period. Most standard drug tests have thresholds designed to differentiate between active use and incidental secondhand exposure, making it rare for secondhand smoke to cause a positive test.


Disclaimer: the information provided in this document is for informational purposes only and is not intended as a substitute for professional medical advice, diagnosis, or treatment.

Our Top Brands

5G Pops Product Spotlight

5G Grower’s New Cannabis Soda Beverage Delivers a Pop. New flavors include 5G Pop Orange, Berry Lemonade and Zero Sugar Root Bee
Read More
All the attendants are super friendly, many products to choose from mello atmosphere, this is my favorite place...
Wendie Beckham
Wendie Beckham
Read More
I have insomnia and my budtender suggested Camino Midnight Blueberry gummies, educated me ok how to use...
Savannah Kershaw
Savannah Kershaw
Read More
Perfect Union Turlock has deals of which I have never seen in other dispensaries. It can be tough to decide since they have...

Wave of Weed Deals During 2024 Summer Flash Fifty Series at Perfect Union


Discover Ultimate Relaxation and Summer Fun with Perfect Union’s June Hot Box


5G Grower’s New Cannabis Soda Beverage Delivers a Pop


Reflect and Relax: Perfect Union Memorial Day Weekend 5-Day BOGO* Weed Sale