National Testing Services Contact

Drug testing in Indiana

State laws, marijuana laws, and employer compliance

Recreational marijuana: IllegalMedical marijuana: LimitedDOT rules apply nationwide
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For employers

Indiana drug testing laws

Governing law

Indiana drug testing laws and federal DOT drug testing regulations

What you can do

Employer rights

  • Pre-employment testing permitted
  • Reasonable suspicion testing lawful
  • Post-accident testing permitted
  • Random testing allowed under employer policy
  • Return-to-duty and follow-up testing permitted
  • Employers may prohibit drug use and impairment at work
  • Employers may discipline violations of workplace drug policies
What you must do

Compliance requirements

  • Maintain written drug testing policies
  • Apply procedures consistently and fairly
  • Use certified laboratories
  • Clearly communicate testing and disciplinary procedures
  • Train supervisors to recognize impairment
  • Follow applicable federal DOT regulations when required

Cannabis

Indiana marijuana laws

Recreational · Illegal

Recreational use

  • Recreational marijuana remains illegal under Indiana law
Medical · Limited

Medical use

  • Indiana has no comprehensive medical marijuana program
  • Limited low-THC CBD products may be permitted under specific state regulations
At work

Workplace impact

  • Employers may enforce zero-tolerance policies
  • Employers may prohibit marijuana use entirely
  • Employers may discipline employees for positive THC tests
  • Safety-sensitive and federally regulated positions remain subject to strict federal requirements
  • DOT-regulated employers must follow federal drug testing laws

Best practices

Staying compliant in Indiana

Develop detailed written drug-free workplace policies
Define impairment standards clearly
Train supervisors to recognize impairment indicators
Stay updated on Indiana drug law developments
Use certified providers
Apply testing procedures consistently and fairly

Our services

Testing services in Indiana

NTS provides accurate, confidential, and legally defensible testing through our nationwide collection network.

Urine drug testingHair follicle testingOral fluid (saliva) testingNail drug testingDOT drug and alcohol testingCourt-ordered testingRandom and pre-employment screening

Sources & legal references

  1. Indiana Department of Labor
  2. Indiana General Assembly
  3. Indiana Department of Health
  4. U.S. DOT Drug & Alcohol Testing Regulations
  5. NCSL Marijuana Laws by State

Laws change often. This page is general information, not legal advice. Check official state agencies or consult legal counsel for current requirements.

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Testing employees in Indiana?

Call the office to set up a compliant program, or schedule onsite collections.

Office601-602-2445 Onsite601-633-7733
Visit1520 Adeline St, Ste. 20, Hattiesburg, MS 39401