Calloway is one of the nation’s fastest-growing clinical toxicology laboratories. The company specializes in urine drug testing protocols to address critical challenges facing today’s drug treatment and medical professionals. This includes Substance Abuse Screening and Prescription Drug Compliance.

Calloway invests in the latest technology and employs industry recognized personnel to offer a portfolio of drug testing protocols. Always an industry leader, Calloway was one of the first laboratories to introduce buprenorphine, tramadol, and oxycodone testing. We also were the first lab to provide results over a HIPAA-compliant web site and integrate an MRO process for non-forensic toxicology review.

Obsessively customer focused, Calloway’s reputation has been built on a foundation of rapid turnaround, accurate results, and exceptional client service. All of Calloway’s testing protocols are tailored for each client and implemented with rigorous performance standards.

Calloway Laboratories, Inc. is a CLIA certified laboratory. Calloway holds a Clinical Laboratory License issued by the Commonwealth of Massachusetts and is further qualified to serve the needs of our clients in the lower 48 states. (See Licenses and Certifications.)

The company’s headquarters is located outside Boston, Massachusetts, with services offered throughout the continental United States.