Search Careers OASIS Login Clinical Reference Laboratory Services Test Catalog About Contact Us COVID-19 TESTING UPCOMING EVENTS Home > About > Upcoming Events ALL EMPLOYER SERVICES INSURER SERVICES START A CONVERSATION We are one of the largest privately held clinical testing laboratories in the U.S., performing hundreds of thousands of tests every day for clients large and small. Our staff of more than 700 associates works around-the-clock to process and report results seven days a week for many of the largest retail, transportation, pharmaceutical, healthcare, and financial service organizations in the world. From high-complexity molecular diagnostic COVID-19 testing, to our toxicology and general lab testing, our partners are as diverse as the testing we perform. Clinical Reference Laboratory 8405 Quivira Road Lenexa, Kansas 66215 800-445-6917 Facebook LinkedIn Twitter Instagram Upcoming Events Certification Notice of Privacy Practices Reporting a Concern Terms of Use Copyright 2021 Clinical Reference Laboratory, Inc.