Kratom is a much discussed plant at the moment, for some a natural miracle, for others an unknown substance. Do you take it for soothing purposes, better concentration or an energy boost? Are you wondering how long it can be detected in the urine? And did you ever wonder if kratom could be detected in a drug test? This article will give you answers to questions you may be asking yourself about how long kratom can remain in your body and whether routine tests can detect its presence.
How does kratom work in the body?
Kratom, whether green, red or white, primarily contains two main alkaloids: mitragynine and 7-hydroxymitragynine. These substances bind to mu-opioid receptors in the brain, similar to some opioids, but their action differs from traditional opioids. In addition to mu-opioid receptors, kratom also partially affects serotonin and dopamine receptors. This mechanism of action is responsible for the effects typical of kratom: increased energy, concentration, pain relief and increased libido. This interaction is dose-dependent: from stimulation and energy boost at lower doses to calming and pain relief at higher doses.
After use, kratom is rapidly absorbed into the bloodstream and goes to the liver, where it is metabolized. The average half-life of mitragynine is between 3 and 9 hours, while 7-hydroxymitragynine has a shorter half-life, meaning the body breaks it down faster. Metabolites are then excreted from the body via the urine.
The duration of kratom in the body depends on several factors:
- dosage,
- method of use,
- a person’s metabolism,
- weight,
- age;
- health status.
How long does kratom last?
As we mentioned earlier, the duration of kratom’s effect depends on several factors. In general, the following applies:
Time of onset of effects
- When consumed in powder or capsule form – the effects usually occur within 30-60 minutes.
- When drinking tea – The onset can be faster, often within 20–30 minutes, as the liquid form is absorbed faster.
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Duration of effects
- Lower doses (1–5 g) - Effects such as increased energy, improved mood or concentration usually last 2–4 hours.
- Higher doses (5–10 g) – Sedative and relaxing effects can last 4–6 hours.
- At very high doses, it can last up to 8 hours, but with a higher risk of side effects.
Even if the effects wear off within a few hours, kratom alkaloids remain in the body longer. Here too, the time during which kratom can be detected in the body is influenced by many factors, generally speaking it is 1–2 days.
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If you are interested in more about kratom. Read our article – What is kratom, how to use it and what are its effects
How long does kratom remain in the urine?
The length of time kratom can be detected in the urine depends on several factors, including the dose, frequency of use, metabolism and user’s hydration. In general, the following applies:
Regular use
In regular users who take kratom frequently and at higher doses, its metabolites may occur in the urine for 5–7 days. This is due to the accumulation of alkaloids in the body and the longer period they need to break down.
Occasional use
In occasional users who take kratom as a one-off or only occasionally, detection in the urine is usually possible for 1–2 days.
How long does kratom stay in the blood?
In occasional users, kratom can be detected in the blood for approximately 24 hours after use. With regular use, the alkaloids can remain in the blood for up to 48 hours or more, as they accumulate in the body. Kratom is not part of routine toxicology tests. A specialized test targeting the alkaloids, mitragynine and 7-hydroxymitragynine, is needed to detect kratom in the blood. These tests are expensive and not performed as standard, which means that detection of kratom in the blood is rare.
Factors affecting the time kratom remains in the blood:
- Dosage – Higher doses mean longer processing times and presence in the blood.
- Frequency of use – Regular users may have alkaloids in their blood for longer periods of time because their body does not get rid of all metabolites between doses.
- Metabolism – People with a fast metabolism break down kratom faster than those with a slower metabolism.
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Do routine drug tests detect the presence of kratom in the body?
Routine drug tests usually do not detect the presence of kratom in the body. This is because kratom and its main alkaloids (mitragynine and 7-hydroxymitragynine) are not included in standard drug tests. As a rule, they focus on substances such as marijuana, cocaine, opioids, amphetamines and PCP. Kratom alkaloids have a chemical structure different to conventional opioids, although they act on the same receptors. Standard tests therefore do not report a false positive.
Specialized tests designed to detect kratom do exist, although they are not part of standard workplace or roadside drug testing. Most routine drug tests do not screen for kratom or its alkaloids. However, as kratom use becomes more widespread, researchers are developing more advanced testing methods capable of detecting its active compounds. These specialized tests may become increasingly important in settings where safety is a priority, although they are not yet widely available.
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When can kratom be detected?
- Specialized tests – If kratom use is suspected, specialized laboratory analyses may be performed to look for specific alkaloids (e.g. mitragynine). However, these tests are not common and are used when kratom detection is specifically required.
- Expanded tests – In some work or court cases, urine, blood or hair toxicology tests may be used, covering a wider range of substances including kratom.
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Kratom at the steering wheel – Is it safe?
Kratom and driving can be a problematic combination, as its effects depend on the dose and individual response. At lower doses, kratom may act as a stimulant, which may not significantly affect driving, but may cause nervousness or impaired judgement in more sensitive individuals. However, higher doses often cause sedation, drowsiness and slower reactions.
Kratom has become increasingly popular among those seeking natural alternatives, but it also raises important questions about drug testing and detection. Standard drug tests do not screen for kratom. Understanding how it works, how long it remains in the body, and when specialized testing may be required is essential for responsible use. As with any substance, informed use and proper dosing are key.
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When can I be tested for kratom in the urine?
A test for kratom in the urine can be performed in several situations: during a medical examination if your doctor suspects it is affecting your health; in workplaces where safety is paramount (e.g. drivers and train drivers); in legal cases such as traffic violations and child care; in rehabilitation programmes and at your personal request.
How can kratom be detected in the urine and blood?
To detect kratom in the urine and blood, a specialized test is needed focusing on its main alkaloids, mitragynine and 7-hydroxymitragynine. These tests are not routinely performed and standard drug tests do not detect kratom. Kratom can be detected in the urine usually for 1–2 days after use by occasional users and for up to 5–7 days after use by regular users. Its presence in the blood is shorter, usually lasting 24–48 hours. Detection depends on the dose, frequency of use and individual’s metabolism.
Warning
This article is for informational and educational purposes only. It does not constitute a recommendation for the consumption of kratom or other psychoactive substances. Kratom is classified as a psychomodulating substance, and products containing it are not intended for persons under 18 years of age. Do not use during pregnancy or breastfeeding, or in combination with alcohol, nicotine, medications, or other psychoactive substances.
Do not use these products before driving a motor vehicle or performing activities requiring heightened attention and coordination. In case of health issues or chronic illnesses, consult a physician before use. Keep out of reach of persons under 18 years of age.
Sources
REDSTORM SCIENTIFIC. How Long Is Kratom Detectable In Urine? [online]. Available from: https://www.redstormscientific.com/how-long-kratom-detectable-in-urine/
KRATOM XCHANGE. Kratom and Urine Test [online]. Available from: https://www.kratomxchange.com/kratom-and-urine-test/
ACS LAB. Does Kratom Show Up on a Drug Test? [online]. Available from: https://www.acslab.com/kratom/does-kratom-show-up-on-a-drug-test/
