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Drug & Alcohol Testing

MRO Review & SAP Coordination

MRO review protects against false positives from legitimate prescriptions. DOT-qualified MROs verify every non-negative result in 3-5 days with complete confidentiality.

Reporting a positive drug test without MRO review violates DOT regulations and exposes carriers to wrongful termination lawsuits when the driver has a legitimate prescription. Medical Review Officers are licensed physicians trained to distinguish between illegal drug use and lawful medication—protecting both safety and employee rights.

DSC works with a nationwide network of DOT-qualified MROs who review every non-negative result within 3-5 business days: contacting drivers confidentially to review medical records, verifying legitimate prescriptions don't constitute violations, reporting only verified positive results to employers, coordinating SAP referrals when violations are confirmed, and maintaining HIPAA-compliant documentation throughout the process. Our MRO network has reviewed 10,000+ tests with zero HIPAA violations and complete chain-of-custody integrity. Protect drivers' rights while ensuring safety—get DOT-qualified MRO review for every non-negative result.

Key Features

DOT-Qualified MRO Network

Licensed physicians with occupational medicine expertise review every non-negative result and contact drivers directly.

Confidential Case Management

Secure workflows protect sensitive health information while maintaining full chain-of-custody visibility for DERs.

Clearinghouse Compliance Reporting

Verified violations and RTD milestones are reported within required timelines, with evidence stored for audits.

Compliance Requirements

Compliance Requirement

49 CFR Part 40 requires all non-negative drug test results be reviewed by a Medical Review Officer (MRO), a licensed physician with specific training in substance abuse disorders and testing protocols. The MRO must contact the driver, review medical records if applicable, and determine if there is a legitimate medical explanation before reporting a positive result. Confirmed violations require SAP evaluation and completion of RTD process before the driver can return to safety-sensitive duties.

How Diversified Helps

  • Network of DOT-qualified MROs for all test reviews
  • MRO review of all non-negative results with driver interview
  • Confidentiality and chain-of-custody protection
  • Network of qualified SAPs nationwide for referrals
  • SAP evaluation tracking and education coordination
  • Treatment verification and RTD test scheduling
  • Clearinghouse reporting of all violations and milestones
  • Complete documentation for audit and legal compliance

Frequently Asked Questions

A Medical Review Officer is a licensed physician who reviews and verifies drug test results. The MRO contacts the driver for any non-negative result, reviews medical documentation for legitimate explanations (like prescription medications), and determines whether to report the test as positive or negative.

The MRO typically completes review within 3-5 business days of receiving a non-negative laboratory result. The MRO must make reasonable attempts to contact the driver before finalizing a positive determination.

Yes, if the employer chooses. However, once the MRO verifies a positive result and notifies the DER, the driver must be immediately removed from safety-sensitive functions. Many employers choose to place drivers on non-safety-sensitive duties during review as a precautionary measure.

Get Started

Protect driver rights with proper MRO verification. DOT-qualified physicians review every non-negative result.

Contact our testing specialists to learn how we can support your drug and alcohol testing program.

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