How long does Kratom stay in someone’s system?

Kratom is an herbal drug that has been around for thousands of years, but has become popular recently in the U.S. and is currently legal to possess/use. It comes from the Mitragyna speciosa plant, which is native to tropical parts of the world, primarily in Southeast Asia. Mitragynine is the main active part in kratom and is responsible for the effects the drug has on the body. Mitragynine produces opioid-like activity in the brain and it can decrease the perception of pain similar to an opioid. Kratom addiction can develop over time through regular use. In low doses, kratom can have stimulant effects. 

How long does Kratom stay in someone’s system?

Kratom’s Half Life

How long a drug remains active in the body is its half-life, which is half the span of time the drug is actively working. Due to being relatively new to the U.S. market, kratom’s half-life is currently unknown, but researchers spectate it may have a half-life of around 24 hours. This means this is the amount of time it takes for half a dose of Kratom to leave one’s system. This can take longer for those who are long term users of the drug, among other factors. In some research, experts suggest it can take up to 9 days to remove Kratom from the system.

How long does Kratom stay in your system?

  • Blood: Up to 9 days
  • Saliva: N/A (Currently no saliva tests available for Kratom)
  • Urine: Up to 9 days
  • Hair: Up to 90 days

Factors That Determine How Long Kratom Stays in the System

Several factors determine how much Kratom is in a person’s body at a period in time, such age, height, weight, and body mass index (BMI). The quantity of the drug taken, as well as the time span also play a major role. 


In conclusion, the time span that Kratom stays in a person’s system depends on different factors, including the type of drug examination administered to the patient and individual factors of the patient. Different types of drug screens will provide different timelines, with a hair test typically being able to detect the existence of drugs much longer than a urine or saliva test. The level of exposure, as well as the time the patient has been on Kratom also may determine how long the medication stays in the body, among other factors.

Kratom Withdrawal - ANR Clinic

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