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.
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.