How Labs Detect Kratom and What Job Seekers Should Expect

Kratom has become an increasingly common topic in workplace drug testing, especially as more job seekers discover that, while legal in many states, it can still trigger concern during pre-employment screenings. Unlike cannabis, Kratom exists in a legal gray area: not federally scheduled, but not fully protected either.

For job seekers, this creates an uncertain landscape. Can labs detect Kratom use? What happens if it shows up on a test? And how does its treatment differ from more familiar substances like cannabis?

To answer these questions, it is helpful to understand how the law views each — and how employers determine what to test for.

How (and Why) Labs Detect Kratom

Most standard workplace drug tests, like the common 5- or 10-panel screens used in non-DOT settings, are not designed to detect Kratom. These panels target specific substances such as THC, cocaine, opioids, amphetamines, and PCP. Kratom’s active alkaloids, mitragynine and 7-hydroxymitragynine, are chemically distinct from those categories, making them invisible to traditional immunoassay tests.

However, specialized toxicology labs can identify Kratom through advanced methods such as liquid chromatography-tandem mass spectrometry (LC-MS/MS). Because these tests are more expensive and not required by federal guidelines, employers rarely use them, unless Kratom use is suspected or the role involves safety-sensitive duties like transportation, healthcare, or operating heavy machinery.

Kratom vs. Cannabis: Legal Protections in the Workplace

To understand why Kratom remains so vulnerable to employer discretion, it helps to compare it with cannabis. This substance has moved from total prohibition to partial protection under evolving state laws.

Cannabis: Federal Prohibition vs. State Protection

This federal classification and ongoing prohibition grant employers regulated by federal agencies, such as the Department of Transportation (DOT), the clear authority to require testing and enforce sanctions for positive results, regardless of the employee’s state of residence.
However, the rapidly expanding wave of state-level legalization for both recreational and medical cannabis has added a complex new layer of employee protection.

Over two dozen states have now enacted employment-specific statutes that prohibit employers from firing or refusing to hire a candidate solely based on a positive drug test for non-psychoactive cannabis metabolites, which signal only past off-duty use.

These state laws prioritize an employee’s right to engage in lawful activity outside of work, effectively shielding non-impaired users and making the job environment for cannabis users significantly more secure in these jurisdictions.

Kratom: Unscheduled, Unprotected, and Fragmented

Kratom, scientifically known as Mitragyna speciosa, occupies a distinct and much more precarious legal position. It is not currently scheduled under the federal Controlled Substances Act, a status that technically makes it legal in the majority of the US. Yet, this de facto legality is a double-edged sword. 

Unlike cannabis, Kratom doesn’t benefit from organized, industry-driven legislative efforts to protect employee use. Instead, its legal status is a confusing, dangerous patchwork, with several states and numerous counties enacting outright bans, classifying it as a Schedule I substance, while other states adopt the Kratom Consumer Protection Act to regulate its sale. 

Employer's Discretionary Power

For an employer, this absence of a clear federal mandate and a fragmented state regulatory environment provides far greater discretionary power. There are virtually no state statutes protecting an employee’s use of Kratom outside of work. 

Consequently, an employer can easily institute a policy that prohibits Kratom use entirely, often citing the FDA’s severe health warnings, and face minimal legal challenge if they terminate an employee who tests positive, regardless of Kratom's legality in that specific state.

Why Employers Enforce Zero-Tolerance Policies for Kratom

Employers’ caution toward Kratom isn’t based solely on legality; it’s rooted in pharmacology and safety risk. Kratom acts on opioid receptors, producing dose-dependent effects that range from mild stimulation at low doses to sedation and opioid-like pain relief at higher doses.

While Kratom has a long history of traditional use in Southeast Asia, where laborers consumed it to relieve fatigue and pain, its modern Western use is largely unregulated. The FDA has issued multiple warnings about Kratom’s potential for addiction, liver toxicity, seizures, and respiratory depression.

A more significant concern arises from adulteration. Independent testing has uncovered Kratom products contaminated with controlled substances, including synthetic opioids like fentanyl, as well as heavy metals and other harmful additives.

From an employer’s standpoint, a positive Kratom test may therefore signal exposure to a substance of unverified purity and unpredictable pharmacological impact. This uncertainty provides a strong safety-based justification for a zero-tolerance policy in workplaces where impairment could pose serious risks.

Currently, there are no standardized or widely accepted methods to distinguish between “safe,” casual Kratom use and impairing use. As a result, many organizations treat any detectable level as a policy violation, a stance driven more by liability and worker safety concerns than by stigma.

Comprehensive Risk Mitigation Requires Customizable Testing

Kratom poses a unique compliance challenge for employers. Its unregulated market, potential for adulteration, and dose-dependent effects create a clear safety justification for strict workplace policies. Unlike other commonly monitored substances, Kratom exists in a legal gray area, technically unscheduled but widely viewed as a high-risk liability due to uncertain purity and potency.

Effectively managing this risk requires a testing partner who can adapt to evolving regulations and deliver reliable detection beyond standard drug panels. Don’t let legal ambiguity compromise workplace safety. Countrywide Testing offers customizable LC/MS laboratory solutions that accurately detect Kratom and other emerging substances.

Partner with us to build a screening strategy that’s precise, defensible, and compliant, ensuring your organization stays ahead of regulatory and safety requirements.