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Contact Us

St. Louis MRO works to provide the best possible service for every client.

We know that drug testing can be a sensitive, confusing and costly issue. Our promise to you is we will make every effort to work with you, no matter your goal, to create a drug testing program that meets your needs. Whether you need help with federally mandated testing or are just looking to learn more, let one of our program managers tell you how we can help.

Business Hours:

Monday - Friday
8:30 AM - 4:30 PM

Phone:636-461-1300
Fax:636-461-1691
Toll Free:866-785-6761
866-STL-MRO1

Anytime:

We will try to respond by the next business day.