How Long Does Kratom Stay in Your System? A Timeline by Test Type

Today we’re taking a no-fluff, facts-based look at how long kratom stays in your system. The short answer is this:

Kratom can stay in your system for up to 9 days, depending on dosage, frequency, metabolism, and test type. Standard urine tests can detect it for up to a week in regular users, while hair tests may reveal traces for up to 90 days. 

If you’ve got a test coming up, or you’re just looking to understand how kratom works in the body, you’re in the right place. First, let’s take a look at what affects detection, how long each test type can detect kratom, and what to know about mitragynine vs 7-hydroxymitragynine when it comes to clearance rates. 

What Affects Kratom Detection Time?

There’s no one-size-fits-all answer for how long kratom stays in your system. That’s because several personal and product-specific factors play a role in how quickly mitragynine and 7-hydroxymitragynine are processed and eliminated.

Average kratom detection times:

These windows reflect average timelines, not guarantees. Actual results depend on how much you took, how often, and the type of kratom product (powder vs extract).

Key Variables That Matter:

• Metabolism Rate: Faster metabolisms break down alkaloids more quickly, shortening detection time.

• Dosage and Frequency: Regular use builds up more alkaloid residue in your system than occasional use. The higher the dose, the longer it sticks around.

• Alkaloid Type: Mitragynine (MIT), the dominant compound in kratom, has a longer half-life than 7-hydroxymitragynine (7OH). Its chemical structure makes it more persistent in fat stores and blood plasma. Learn more in the PubChem profile of mitragynine.

• Hydration and BMI: Staying hydrated may help flush kratom metabolites faster. Body fat percentage also matters since mitragynine is lipophilic, meaning it can be stored in fat tissue longer.

If you're using full-spectrum kratom powders or capsules, it’s harder to estimate elimination time. For context on serving sizes, check out our kratom dosage guide.

Detection Timelines by Test Type

The way kratom shows up in your system depends heavily on the type of test used. Each method has its own detection window, accuracy level, and use case.

Urine Tests

• Detection Window: 1 to 9 days

• Used By: Employers, clinics, insurance screenings

• Why: Kratom alkaloids are excreted primarily through urine, making this the most common test

Light, one-time users may clear kratom in 1–3 days. For daily or high-dose users, detection can stretch to 7–9 days.

Blood Tests

• Detection Window: Up to 72 hours

• Used By: Rarely used outside clinical or forensic settings

• Why: Kratom’s alkaloids drop quickly in blood after the first 24 hours

This method is less common but may be used during emergencies or after accidents.

Saliva Tests

• Detection Window: 6–12 hours

• Used By: Rare in kratom screening

• Why: Short timeframe, low reliability for mitragynine

Hair Tests

• Detection Window: Up to 90 days

• Used By: Legal or forensic scenarios

• Why: Alkaloids can bind to hair follicles over time

Hair tests aren’t standardized for kratom, but in theory, they can detect usage from months back.

Need more clinical understanding? Check the ACS Labs Detection Guide for lab-reviewed test timelines.

Looking for higher-purity extracts that affect timing? See how our ChromaPure extracts are formulated for consistency and more predictable elimination, especially when compared to lab-produced, adulterated kratom.

Read more about how long does kava stay in your system.   

Does Kratom Show Up on Drug Tests?

Kratom doesn’t show up on most standard drug tests, but that doesn’t mean you’re in the clear.

5-Panel & 10-Panel Tests

These are the most common workplace screens. Neither is designed to detect mitragynine or 7-hydroxymitragynine, the primary alkaloids in kratom.

However, some users report false positives for opioids, especially if the test is older or of low quality. It's rare, but not impossible.

LC-MS/MS Testing

Advanced labs and forensic tests use LC-MS/MS (liquid chromatography–mass spectrometry), which can specifically detect kratom alkaloids. This is the method used in medical and legal settings when kratom use needs to be determined.

Don’t Assume You’re Invisible

Just because kratom isn’t on a panel test doesn’t mean you won’t be tested for it. Employers, especially in federally regulated industries, can request targeted screenings.

For more clarity on how kratom is viewed in drug safety policy, read the NIDA DrugFacts on Kratom.

If kratom is restricted where you live, be aware that testing policies may reflect local laws. Check our Kratom legality by state page to stay informed.

How to Prepare If You’re Being Tested

If you’ve used kratom recently and have an upcoming drug test, don’t panic, but don’t wing it either. Here’s how to prepare wisely.

1. Know the Test Type

Determine the type of drug screening that will be used. If it’s a standard 5-panel or 10-panel test, kratom likely won’t register. If it’s an advanced lab test (like LC-MS/MS), kratom may be detectable.

2. Be Transparent When Appropriate

In some cases, especially with healthcare providers or safety-sensitive roles, it’s better to be upfront about any supplements you use. Employers can’t always make informed decisions if they’re in the dark.

3. Use Products You Can Trust

Unlabeled or synthetic kratom blends may contain banned substances or unpredictable alkaloids. Stick with vendors who are transparent about what’s in their products and how they’re made.

To understand Real Botanicals' commitment to honesty and formulation standards, visit About Real Botanicals.

4. Understand Industry Policy

Some sectors (like transportation or military) may have zero-tolerance policies even if kratom is legal. For current guidance, explore the American Kratom Association resources on workplace rights and federal positions.

FAQs About Kratom and Drug Testing

Can kratom trigger a false positive?

It’s rare, but yes, especially on older opioid tests. Some users report false positives for methadone or morphine, though these are usually resolved with follow-up testing. Some testing discrepancies are likely due to liver enzyme tests indicating CYP3A4, the liver enzyme responsible for metabolizing kratom. 

Will the DOT test for kratom?

The Department of Transportation does not currently test for kratom under federal drug panels. However, individual employers within DOT-covered industries may set their own testing policies.

What test detects kratom best?

LC-MS/MS is the gold standard for detecting mitragynine and 7-hydroxymitragynine. Standard urine or saliva tests usually won’t flag kratom.

How long should I wait to be safe?

If you’ve used a full-spectrum product or extract, it’s safest to wait at least 5–7 days before testing, especially if you’re a regular user. Heavy or chronic use may require longer.

Does product strength affect detection?

Absolutely. High-alkaloid formulas, like Super Kratom Capsules, may linger longer in your system compared to milder blends. Always factor in potency and frequency. Learn more about how many kratom capsules to take. 

Final Thoughts: Science, Not Panic

If you’re asking how long does kratom last in your system, chances are you’re trying to make a smart, informed choice, and that’s exactly the right move. It’s also a good idea to know how long kratom stays in your system so you can pace other substances to not overlap, like having a night out drinking alcohol with friends. (It’s best not to use alcohol and kratom at the same time.)

Kratom’s detection window varies depending on how much you take, what form you use, and how your body processes mitragynine and 7-hydroxymitragynine. While most standard tests won’t screen for it, advanced methods can, especially in sensitive roles or legal settings. 

Recommended Read: 7-hydroxymitragynine vs kratom 

The good news? You’re not flying blind. With a basic understanding of kratom’s half-life, test types, and metabolism factors, you can plan accordingly and reduce surprises.

Just remember:

• Use lab-tested, clearly labeled products

• Be cautious with high-dose extracts or frequent use

• Know the policies in your industry and state

Looking for transparent, high-quality formulas? Shop our lab-tested kratom products, backed by clear ingredient listings, cGMP practices, and clean extraction methods.

This article is for educational purposes only and does not constitute medical or legal advice. Always consult your healthcare provider before using any botanical product.