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  • Efficient Workers’ Compensation Claims Management
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Three Reasons to Choose Keystone

Trusted Answers Since 1988

Located in Asheville, North Carolina, Keystone Lab is a nationally recognized, state-of-the-art laboratory committed to providing answers you can trust.

Accuracy Guaranteed

You depend on accurate, comprehensive, qualitative and quantitative drug screening results. With Keystone Lab you get all the advantages of a cutting-edge facility, the expertise of a top-notch staff, and the personal attention of a customer support team all eager to provide you with the most trusted answers in the industry. If you have a question, we have the answer. 

We Specialize in Pain Management, Addiction Monitoring, Workers' Compensation, and Workplace Testing

Our typical opiate screening includes: Hydromorphone, hydrocodone, and oxycodone. We also offer customized testing protocols to detect commonly abused substances. Worried about dilution or adulteration? We check for appropriate PH, specific gravity, and creatine levels. 

Get your trusted answers today