Valley Screening Drug Testing Services VSDTS Staff & Leadership Team

VSDTS Staff & Leadership Team

The Management, Medical Review Officers (MRO), Drug Testing Specialists of Valley Screening, Inc have over 20 years’ experience in the drug and alcohol testing industry. The value of Our Experience is enhanced by our commitment to serving our clients needs. 

  • Our Team Members have been trained in all aspects of the drug and alcohol testing industry.
  • Our Results Department maintains the highest standards in confidentiality and donor information.
  • Our MRO Officers are licensed physicians and have extensive experience in drug and alcohol testing, reviewing results, and verifying those results.  All partnered laboratories utilized by VSI are SAMHSA certified by the U.S. Department of Health and Human Services (HHS).

Donald Brent Oliver, Founder | CEO

Brent is a licensed Certified Athletic Trainer (LAT ATC) for the past 28 years with a Master of Science in Physical Education from MTSU. In addition to being a licensed professional in the field of athletic training, Brent is also certified in the drug & alcohol testing industry as a Certified Professional Collector (CPC) and Breath Alcohol Technician (BAT). VSDTS was established on December 3, 2007, providing drug and alcohol testing collection services for HHS, USDOT, businesses, schools, courts, and families of North Alabama, as well as the surrounding areas. Brent enjoys serving the athletes in the surrounding communities and building “customer-centric” companies that not only produce profits but also function as a connection in helping families and other organizations in the community.

Stepping out of your comfort zone and experiencing new things is the best way to learn as a young professional. You can research, plan, and educate yourself, but the only true way to improve is to put yourself or your business out there and learn from what you experience. If you don’t have big dreams and goals, you’ll end up working for someone that does.

D. Brent Oliver, MS LAT ATC CPC BAT

Brent is married to Gina Cox of Russellville and currently living in Tuscumbia Alabama. They have 3 daughters (Abby, Maddie Grace, & Emma Grace).


Tammie Wright, Client Support & Office manager

Bio for Tammie Wright COMING SOON


mhanda Urban, Tech Supervisor/Collector & Marketing director

Mhanda has been with VSDTS since June of 2020. Prior to joining the VSDTS Team, Mhanda worked as a Personal Banker for 9 years and worked 2 years for Aviagen. Mhanda has shown superior leadership skills and has earned the position of Professional Collector Supervisor. In addition to being a Supervisor, Mhanda is also a collector herself.


jon belew, professional collector

Jon is a 25 yr. electrician with an extensive background in safety with a law enforcement background. Jon joined our VSDTS team as a Professional Collector in August of 2020.


Call and we’ll come to you, 24 hours a day, 7 days a week.  Our “on-site” mobile service can respond in most cases within 20-30 minutes to your location to administer a drug/alcohol test regardless of location. Contact us at 256-320-5142.