MRO Services

The integrity and accuracy of a drug test result relies on the Medical Review Officer. The MRO is crucial to determining if a test is negative, positive, adulterated or invalid. An important step in this process is to have a qualified licensed physician who, as the MRO, will review and evaluate all test specimens after each test has been analyzed by a Certified Laboratory. 

The primary responsibility of the MRO is to receive laboratory-confirmed urine drug test results; determine whether there is a legitimate medical explanation for a laboratory-confirmed positive, adulterated, or substituted result; review and report all verified results to the employer in a timely and confidential manner. 

Having an MRO review and verify drug tests prevents unexplained positive test results and reduces employers' liability while administering a Drug Free Workplace Program. 

C&S Testing will provide a full-service Drug Free Workplace Program which includes a Medical Review Officer for test verification as part of our robust and comprehensive span of Drug Testing Services. 

Drug Testing Overview
Alcohol Testing Overview
Mobile Drug Testing

Employer Solutions
Pre-Employement Testing
Third Party Administrator
Drug-Free Workplace
MRO Services
Background Checks
DOT Supervisor Training

Other Services
Student Testing

New Account Sign-up
Schedule Test
​Employer Record Access