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Medical Review Officer (MRO) services are provided by a licensed physician specializing in addiction medicine.  Services include the interpretation and evaluation of test results from confirmed positive, adulterated and substituted specimens in addition to the employee's medical history or other relevant biomedical information necessary to determine if there is a legitimate explanation for a confirmed positive test.

The Medical Review Officer (MRO) process was first developed by the U.S. Department of Transportation to provide a level of safety and confidentiality between the employer who required a urine drug screen test and the employee who was required to submit to the test.

Although established originally for the federally regulated testing programs, the MRO process has been widely embraced by the private sector and is now considered essential to all quality drug testing programs.

In the MRO process, an MRO receives drug test results from the laboratory, reviews the results and evaluates the validity of the result.  If the result is positive, the MRO determines whether there is a legitimate medical reason for the test to be positive.  Based on the review, the results are verified and reported as "Positive", "Negative", "Adulterated", "Substituted", or "Canceled/Invalid/No-Test".  The employer then takes action according to internal company policy, federal requirements or both.


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