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How Long Does CBD Stay in Your System?

CBD, or Cannabidiol, is a compound derived from the hemp plant. CBD dosing typically starts from 5mg and can go up depending on the patient’s condition and the doctor’s suggestion. Researchers have discovered that we have natural receptors throughout our bodies (CB1 and CB2), including the nervous system and the brain, responsible for the cannabinoid molecules. Our bodies produce natural cannabinoids which bind to these receptors. There are a lot of ways to get CBD into our system. There are inhalation, topicals, sublingual, and edibles, which are currently the most popular in markets. Typically, CBD stays in your system for 2 to 5 days, but that range does not necessarily apply to everyone. In some cases, CBD stays in their system for weeks. CBD may contain small amounts of THC, which causes a person to feel the “high”. CBD can have no more than 0.3 percent of THC for it to be legal. It’s highly unlikely that CBD will cause you to fail a drug test. Most drug tests look for the presence of THC which is legal at the federal level in most states.

CBD Duration on Body

Where can CBD be Detected in the Human Body?

There are many places where CBD can be detected in the human body. These places are listed below.

  1. Urine: Urine can be used to check for drugs and other substances such as CBD. 
  2. Hair: Metabolites on hair can be tested for drugs and substances as traces may still be in hair. 
  3. Blood: Blood tests might also be able to assess for metabolites such as THC and CBD. 
  4. Saliva: Saliva can be used to detect CBD and THC this can show up even if you digest CBD. 

1. Urine

The most common method of drug screening, especially by employers, is through urine tests. For urine tests, THC metabolites stay in your body between 3 days to 2 weeks after being last taken. For daily users, it can stay in your body for as long as 15 days depending on your dosage. Detection varies a lot according to dose and frequency usage. A study was conducted in 2016 wherein 15 people were given a variety of CBD products. They were put to test after 2 hours after consuming CBD oil, and other substances. 14 out of the 15 participants tested positive for CBD molecules and cannabinoids. One of the participants was tested again after 24 hours and showed no signs of cannabidiol in the body. Unfortunately, this study doesn’t say much about CBD tests. Although it is expected that a person tested would test positive after 2 hours, one person tested negative after 24 hours.

2. Hair

Hair tests are known to detect drugs for an extended period of time. However, this test is not as used as urine tests.THC metabolites on hair tests can be detected for as long as 3 months after being last taken. THC metabolites enter the hair follicles through tiny blood vessels after usage. Since hair strands grow 0.5 inches each month, it’s possible that traces of the drug will stay in the hair. CBD may also be detectable on hair the same way that THC is. However, CBD is less often tested for so it may not be detected. 

3. Blood

Blood tests can also be used to detect THC metabolites, although they are not as common as urine tests, as well as drugs, which can be quickly eliminated from the bloodstream. For blood tests, THC is detectable in your plasma for as long as 5 hours after last taken but in some cases, can be present for as long as a week. A study was conducted on 14 people wherein 10mg of CBD was given to them every day for 6 weeks. Drug tests did not detect any CBD in the body of the patients.

4. Saliva

Saliva tests can also be used to detect THC metabolites, but just like hair tests, these tests are rare for employment or legal reasons. THC in saliva tests can be detected within minutes after taking it and could last up to 36 hours depending on the frequency of use and dosage. With vaping, CBD can be detected in 5 to 10 minutes. Research on how long CBD stays in the saliva isn’t as robust as the other tests. If you take CBD under your tongue, it gets absorbed by your mucous membrane and leaves your system slowly. CBD shows up sooner when you swallow the products as they metabolize faster. 

How Long Does CBD Stay in Lab Tests?

Even though you no longer feel the effects of CBD, it doesn’t mean that it is no longer detectable. A drug’s half-life is the amount of time it takes for the active substance of a drug in your body to decrease by half the amount it was originally given. The half-life of CBD is between 18 to 32 hours but it can still be detectable on lab tests.

What Affects How Long CBD Stays in Your System?

Several factors affect how long CBD stays in a person’s body. The list of factors can be found below.

1. Frequency of CBD Usage

Frequency of usage is a factor that can affect the effectiveness and longevity of CBD in your body. 

2. Amount of Used CBD

The amount of CBD used and the dosage depends on the CBD dosage and your bodies ability to process it. 

3. Eating Habits

Your eating habits have an effect on the way CBD is metabolized. 

4. Method of use

How you choose to use CBD affect its longevity and effectiveness, such as using a topical cream, gummies or vape. 

5. Your Metabolism

How your body metabolises CBD will determine how long it has an effect on your body. 

  1. Frequency of CBD Usage

The frequency of usage can affect how long CBD will stay in your body. If used regularly, it builds up in your body over time. If used occasionally, your system can clear up the CBD much faster. It is recommended to use it for at least a week to know if it works for you. Your body type and metabolism can also dictate how fast the CBD will take effect and how long will they remain in the body. 

  1. Amount of Used CBD

CBD effects also depend on the amount of CBD you consume. The higher the dose of CBD, the longer it will stay in your system. Furthermore, since CBD can be stored in your fat cells, drugs can still be retained even after it has been processed out of your system.

  1. Eating Habits

Your food intake also affects how long CBD stays in your body as it gets metabolized and eliminated faster when you take it with an empty stomach than on a full stomach. A study also suggested that taking CBD with food, especially high fatty foods, increases the amount of CBD in the body by 4 times, and the amount recorded in the patient’s blood by 14 times. 

  1. Method of Use

The method you use is also a factor to be considered. The use of inhalation is faster than edibles and sublingual as they don’t pass through your digestive system anymore. The time it takes for each method to pass through your body will still vary, depending on factors like dosage and your metabolism.

  1. Your Metabolism

Metabolism is the chemical reaction in the cells of the body that changes food into energy. Studies suggest that CBD aside from reducing food intake can also boost your metabolism. CBD and other substances affect people differently since everybody’s body is different. The time CBD stays in your system can depend on how your metabolism works, body mass index, and water content.

Is CBD Detectable on a Drug Test?

Yes. CBD can be detected on a drug test if your CBD product contains THC. Since THC is a main active ingredient of cannabis, it causes a person to feel high and will be detected on drug tests. There are different types of CBD products to choose from if you want to know how much THC you’re consuming. THC contents according to the types of CBD are listed below.

  • Full-spectrum CBD. This contains all of the compounds from the plant they’re extracted from, including THC. Look for hemp-derived CBD as they only contain 0.3 per cent of THC.
  • Broad-spectrum CBD. It’s similar to full-spectrum CBD but they go through a process to eliminate THC.
  • CBD isolate. This contains CBD only. 
Is THC-Free CBD Detectable on a Drug Test?

No. THC-Free CBD should not show up on a drug test. However, many CBD products contain amounts of THC, which is the main ingredient of cannabis. Those products can be detected by drug tests.

How Long do CBD Effects Last? 

CBD is well tolerated by humans and the effects of CBD last depending on how much you consume, your body chemistry, age, and your method of usage. But in general, the effects of CBD can last from 2 to 6 hours. In conclusion, the more CBD you take, the longer the effects would last. You can start around 2 mg to 5 mg per serving, depending on your doctor’s suggestion.

How Long Does CBD Last for Animals?

Like CBD products meant for humans, CBD is a great supplement for animals, especially for dogs. But before considering CBD as a supplement for your pet, always speak with your veterinarian to know if it’s appropriate for them. Knowing the right amount of CBD to give to your pet is also very important to know what works well for them.

Every dog and breed is different, so the length of time CBD stays in your dog’s body depends on many factors.

  1. Weight
  2. Diet
  3. Biochemical makeup of your dog
  4. Frequency of dosing
  5. Activity

A study in 2018 found that CBD can help increase comfort activity in dogs with osteoarthritis and may also help reduce the number of seizures experienced by dogs with epilepsy. However, the study noted an increase in the liver enzyme alkaline phosphatase (ALP) of the dog during CBD treatment. The half-life of CBD in dogs is about 4 hours, which means that CBD can be present in a dog’s system for about 24 hours but will still depend on the dosage amount and the symptoms. You should always speak with your dog’s veterinarian before giving CBD to your pup.