eScreen Explained – Workplace Drug Testing Technology and Services Explained Workplace drug testing involves more than collecting a urine sample and waiting for results. Behind every screening event there is a chain of custody, a laboratory, a Medical Review Officer,...

Concentra Explained – Services, Testing, and Drug Screening Explained Concentra is the largest provider of occupational health services in the United States by number of locations—a distinction that reflects not just scale, but a focused specialization that sets it apart...

Quest Diagnostics Explained – Services, Testing, and Drug Screening Explained Quest Diagnostics Incorporated (NYSE: DGX) is one of the largest clinical laboratory companies in the United States, providing diagnostic information services to patients, physicians, hospitals, employers, and government agencies. Headquartered...

Labcorp Explained – Services, Testing, and Drug Screening Explained Laboratory Corporation of America, operating publicly as Labcorp (NYSE: LH), is one of the largest clinical laboratory networks in the world. Headquartered in Burlington, North Carolina, the company processes an enormous...