Welcome to Medical Assay Laboratory

Medical Assay Laboratory is a full service, privately-held medical testing laboratory incorporated in the state of Illinois. We specialize in providing high-quality clinical laboratory services to Physicians, Hospitals, Home Health Care Agencies and Individuals at an affordable cost and a quick turnaround. We also specialize in contract laboratory services for corporations, colleges and schools, and county and municipal governments interested in drug screening. Our process is quite simple. First, physicians and other health care providers can send us specimens from anywhere in the United States (see guidelines for shipping specimens). If you are a health care provider located within 100 miles radius of our facility in Suburban Chicago, in Darien, Illinois, our couriers will pick up specimens directly from your office or practice site.