A&D Tests, Inc.

About

A&D Testing, Inc. has been providing professional alcohol and drug testing services to Texas communities since 1991. Founded by Judy Williamson, the company was established to address critical gaps in workplace drug testing — including the need for legally defensible forensic specimen collection and more efficient, cost-effective testing solutions for employers.

Today, A&D Testing operates multiple walk-in facilities across Texas and offers 24/7 mobile collection services for businesses, schools, government entities, and federal programs. Their experienced team specializes in developing, implementing, and administering comprehensive drug and alcohol testing programs, including DOT random consortium services that help organizations remain compliant and operating safely.

With more than three decades of industry experience, A&D Testing is known for fast, confidential service and a strong commitment to accuracy, compliance, and long-standing client relationships.