MROMedical Review Officer
A licensed physician who reviews and verifies drug-test results, confirming legitimate medical explanations before reporting.
Key facts
- A licensed physician who reviews and verifies drug-test results.
- Interviews the donor to rule out legitimate medical explanations.
- MRO verification is required in DOT testing.
What it means
An MRO is a physician trained to interpret and verify laboratory drug-test results. Before a non-negative result is reported, the MRO interviews the donor to rule out a legitimate medical explanation, protecting both employer and employee. MRO verification is required in DOT testing and routine in many non-DOT programs.
Frequently asked
What does a Medical Review Officer do?
An MRO is a physician who reviews and verifies laboratory drug-test results. Before reporting a non-negative, the MRO interviews the donor to rule out a legitimate medical explanation.
Is an MRO required for all drug testing?
MRO verification is mandatory in DOT-regulated testing and routine in many non-DOT programs. It protects both employer and employee by ensuring results are interpreted correctly.
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