Detox from Marijuana Factors

Detox from Marijuana Factors

There is no one magic number as to how long marijuana will stay in your system. The duration varies, depending on many factors:

  • Method of Intake
  • Body weight
  • Body Mass Index
  • Metabolic Rate
  • Frequency of substance use
  • Potency of substance used

Marijuana is most commonly smoked, although it can also be eaten. Marijuana is processed through our metabolism and exited from our bodies. However, THC or Tetrahydrocannabinol, is the remaining metabolite from marijuana and is not always easily passed through our body’s waste removal process. It is ultimately stored in our fat cells for longer periods of time. This means that a person with a higher percentage of body fat will show trace amounts of marijuana for longer than someone who has a lower percentage of body fat.



thc-moleculeHow often you use marijuana and the strength of the particular strain are also contributors in determining how long marijuana will stay in your system. Someone that uses marijuana every day will have many more metabolites store in their fat cells that someone who only occasionally partakes. Similarly, the potency of the strain also matters. Marijuana found in the United States typically has a THC concentration of about 10-20%, but some marijuana strains can be much higher or lower. The higher the strength, the more metabolites will be stored in your system and therefore, the longer you will have detectable amounts of marijuana in your cells.

Looking at all these variables, it is clear that duration varies significantly from person to person. On average, marijuana can stay in the body anywhere from 20 hours to 21 days. If you only smoke once, plan on having it in your system for about a week. Casual users should plan for about 21 days and heavy users should plan on up to 90 days.

If you are concerned about a hair test, it is much easier to calculate because hair grows at a consistent rate of a half inch per month. Most hair drug tests require 1.5 inches of hair as a sample. This means they are testing for a 90 day period. If you need to pass a drug test, you would have to be weed free for over 3 months to be safe. There are, fortunately, shampoos which will help to remove toxins from your hair in order to test cleaner.