The World’s Leader in Diagnostic
Testing, Information, and Services
We offer convenient access to high quality testing and services throughout the United States. We have laboratories in or near all major cities, and esoteric testing laboratories on both coasts, providing a broad range of services to our customers. Convenient specimen collection options include in-office phlebotomy and courier services and more than 2,000 conveniently located patient service centers across the country.
Hours M-F 8:30 am-12:00 pm & 1:00 pm-4:30 pm