A typical user predicts the duration of the effects by looking at the product packaging and reading the color of the leaf strain and the main strain of the product. Red Strains: Most relaxing of all Kratom strains, the effects last for about 5 hours though some strains are said to last for as long as 10 hours. White Strains: Although more rapid and intense than the red strains, these strains are said to have a duration between 3-5 hours..
http://kratomlegend.com/kratom-guides/kratom-half-life-how-long-does-kratom-stay-in-your-system/
The term “half life of effects”, means the amount of time that the alkaloids work within your body. But, you must take this amount and double it if you really want to know how long it lasts in the body. Kratom’s main alkaloid is known as mitragynine. It has a half life of around 3.5 hours. Another well known alkaloid, 7-hydroxy-mitragynine, has a half life of around 2.5 hours. Remember, you must double this amount, which means that it really lasts about five to seven hours. These are not the only two Kratom alkaloids.
http://kratompowders.org/long-kratom-stay-system/
Understanding the elimination half-life of Kratom in humans has recently been studied in a group of males who appeared to have Kratom abused for around two years. The study suggests that the primary alkaloid ‘mitragynine’ has an elimination half-life of around 23-24 hours (+/- 16.07 hours).
http://kratomguides.com/long-kratom-stay-system/
By system, I mean urine. I know many of you don't believe Kratom can be tested for, and I agree that it is almost never tested for but certain labs have introduced testing for it. A friend of mine is on court ordered testing and has taken these tests while doing kratom for about a year with no problems.
https://www.reddit.com/r/kratom/comments/2rf5p8/how_long_will_kratom_stay_in_your_system/
Best Answer: UA is like a day, maybe 3 if a particularly heavy user (these numbers are heavily padded for edge cases). The active part of Kratom are alkaloids, which are pretty quickly eliminated via urine. A blood panel may be different however.
https://answers.yahoo.com/question/index?qid=20130320082918AA3xxYq
Read The Kratom Wiki Before You Submit. 1  Methods Of Kratom Preparation. 2  Kratom Strains & Effects. 3  Kratom Dosage Conversion Chart.  Current Kratom 1  Vendors. Recommended Kratom Forums.
https://www.reddit.com/r/kratom/comments/2rf5p8/how_long_will_kratom_stay_in_your_system/
This means that it will take around one day to eliminate 50% of Kratom from your body. Applying the formula of half life, we calculate the time period required to completely clearing Kratom from a person’s system and it comes out to be around 5.33 days.
http://kratomguides.com/long-kratom-stay-system/
However, generally observed, the half-life of Kratom varies from four to six hours. This means that when you take the recommended dose of around 3-4 grams of Kratom (the dose varies with various strains), you will observe effects within an hour and these effects will last for about four to six hours.
http://kratomguides.com/long-kratom-stay-system/
My friend is getting a drug test for kratom and it's being sent to a lab.
https://answers.yahoo.com/question/index?qid=20130320082918AA3xxYq
The main alkaloid present in the Kratom leaf known as Mitragynine has a half life of approximately 3.5 hours. There is another alkaloid by the name of 7-hydroxy-mitragynine which has a half life of 2.5 hours. All this indicates that an average Kratom leaf extract stays active for almost 5-7 hours.
http://kratomlegend.com/kratom-guides/kratom-half-life-how-long-does-kratom-stay-in-your-system/
how long does kratom stay in urine
Kratom stays in urine for 5 to 7 hours.