Marijuana Tests. How long can cannabis be detected in your blood?

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Marijuana Tests. How long can cannabis be detected in your blood?

    How long can cannabis be detected in your blood – often people want to know that. Occasional use of marijuana is no obstacle to working or driving. However, it is normally very undesirable to test positive for marijuana. So how long is there a possibility for that? It should be noted: it is THC, the active substance of cannabis that tests detect in the human body. For that purpose samples of blood or urine are taken..

How Long Do You Test Positive after Consuming Marijuana?

    Importantly, the answer to this question of how much cannabis is highly individual. The main factor is how regularly weed is consumed. Apart from that, how fast it leaves your system depends on many parameters of the body itself. A fat-soluble substance, THC tends to remain in fat cells – it actually accumulates there if cannabis is a frequent guest in your life. As for blood and urine samples, testing positive or negative strongly depends on the following factors: 
  • Percentage of body fat;
  • The person's height, weight, age and speed of metabolism;
  • The amount of THC received;
  • The duration of regular consumption.
Logically, the more often you get high and longer you have had this hobby, the longer marijuana will stay in your system. 

One-Time Use vs Regular Consumption

    What about a one-time use? You will definitely test positive if your blood / urine is taken within 2-5 hours after smoking weed (probably within 2 days if an edible was consumed). Regardless of the above mentioned peculiarities of your body, t is unlikely to test positive if the test is done 4-7 days after a single case of consuming marijuana. 

    Now, if marijuana is consumed more or less regularly,  you may test positive for 40-45 days after you have completely stopped taking it. Thus, the answer to this question will depend on a number of factors, and it can not be called unambiguous. Again, the result highly depends both on your body features and on how long you’ve been on marijuana. In some cases, people test positive even after 4 months of abstaining!

Types of Tests for Marijuana


  • Urine test is a common procedure used in some companies to make sure that everybody follows the law. A urine test can indicate even the exact concentration of THC in your system. if we talk about sophisticated modern solutions. 
  • Blood tests are very quick and therefore used for rapid testing. The results are more accurate in case of recent marijuana use. 
  • Saliva tests are just as fast – and mostly sensible if you’ve smoked very recently. 
  • Hair tests are the most disappointing thing. THC may remain in the bulbs of our hair for up to six months. 

    All of these tests are more or less informative, and for most accurate results they can be used in combination to get information about the duration, amount and other parameters of cannabis use.

How to Get Cannabis Out of the Human Body Faster?

The natural process of THC leaving the system can be sped up. Despite what many people believe, excessive water drinking seems to be of no use for this purpose. But to some extent, sweating may help: an active lifestyle, doing sports, taking hot baths or going to sauna can help. Thus metabolism will be accelerated.  Another efficient tool is a diet with a certain acid-alkaline balance: oxidation stimulants like milk, flour and sausage should be excluded. On the contrary, such food as cucumbers, spinach / celery, cabbages is recommended. 

Intresting topics: Medical Marijuana and Smoking for Therapeutic Purpose, Top Most Potent Marijuana Strains and How does cannabis affect the human body.

16.08.2016

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