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How long does CBD stay in the blood?

Written by : Benjamin Poirel Nadal

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Reading time 4 min

You're probably wondering how long CBD stays in your bloodstream, right? Well, there's no single answer, because it all depends on you. It depends on how you consume it, your body, and your rhythm. Come on, Mama will explain it all to you in simple terms.


Things to remember

  • CBD can remain detectable in the blood for anywhere from a few hours to several days.
  • The method of consumption directly influences the duration of presence.
  • CBD is not a narcotic, but beware of traces of THC that may show up in tests.

How does the body metabolize CBD?


When you consume CBD, it does not remain intact in your body; your liver breaks it down using specific enzymes. This process, known as metabolization, transforms the CBD so that your body can eliminate it.


Half-life is often used to measure how long it takes for a molecule to disappear from the blood.


For CBD, thehalf-life can vary between 1 hour and 5 days, depending on the individual and the dose.


Keep in mind that occasional use remains detectable for a few hours to two days, and regular use can leave traces for several days, sometimes up to a week.


So you see, there is no universal answer, but rather a range that depends on your profile and habits.

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What factors influence the length of stay?


Why does CBD stay in the system longer for some people than others? Well, several factors play a role.

  • Frequency of consumption: if you take CBD occasionally, it leaves your system more quickly. On the other hand, if you consume it every day, your body takes longer to eliminate it.
  • The dose: the more you consume, the longer it takes your body to eliminate everything.
  • Absorption method: sublingual oil acts quickly but lasts for less time than capsules or infusions, which need to be digested. Vaporization is even faster, but its effects wear off just as quickly.
  • Your metabolism: every body is unique. Your weight, age, diet, and level of physical activity all influence how quickly you eliminate toxins.
  • Product quality: if you take a flower or full-spectrum oil, there are often traces of THC. This can be a problem during a check.

CBD, screening, and risks of confusion


Here, I need to be very clear with you. Standard screening tests, such as those used by the police or in companies, do not test for CBD. They test for THC. In Ireland, saliva tests are mainly used to screen for CBD.


In theory, if you only consume pure CBD (known as isolate), you are not at risk. But in practice, many products on the market are full spectrum. This means that they contain CBD, but also other cannabinoids, including small amounts of THC (less than 0.3% in Ireland be legal).


And be aware that even if the amount is small, it can accumulate in your body and cause a positive test result. This is not a common occurrence, but it can happen.


That's why I always advise you to check that your product has a certificate of analysis issued by an independent laboratory to confirm the cannabinoid levels present. Without this information, you're flying blind.

My practical advice if you consume CBD


Come on, Mama will give you some tips on how to consume your CBD without stress or doubts:

  • Always choose products that have been tested in a laboratory and have a certificate of analysis.
  • If you are concerned about screening, choose CBD isolate rather than full-spectrum products.
  • Start with small doses and observe how your body reacts;
  • Remember that CBD is not a miracle cure. Its effects on mood, stress, or sleep are assumed, not scientifically guaranteed.
  • Above all, maintain a balanced lifestyle. Sleep, diet, and exercise remain your best allies.

Keep in mind that for a light user, a few hours are enough toeliminate the molecule, whereas for someone who takes CBD every day, it can remain in the system for several days, sometimes up to a week.


The most important thing to understand is that CBD is not considered a narcotic in Ireland, but that traces of THC present in some products can cause problems during drug testing. 


That's why it's important to consume knowledgeably and always favor transparency from manufacturers.

Benjamin Poirel-Nadal

Article written by Benjamin Poirel-Nadal

Passionate about natural well-being and plants with multiple virtues, I've been exploring the benefits of CBD and its various forms for several years.


My aim? To share with you clear information, honest opinions and practical advice to help you integrate CBD into your daily life with confidence and serenity.