Client Services Overview
The Integrated Oncology client service center has a highly trained staff available to respond to all general client needs. Our client services representatives provide prompt answers to questions or concerns on test information, specimen requirements, turnaround time, test add-ons, and results. Client services also routes client calls directly to the appropriate technical or medical professional as necessary. Additionally, clients may contact the performing laboratory directly at the service locations listed below:
Irvine, California
Telephone: 800-710-1800, option 2
Fax: 949-450-0146
Hours of Operation: Monday - Friday 5:00 AM - 6:30 PM PST
Saturday 6:00 AM - 1:00 PM PST
Brentwood, Tennessee
Telephone: 800-874-8532, option 2
Fax: 615-370-8074
Hours of Operation: Monday - Friday 5:00 AM - 6:30 PM PST
Saturday 6:00 AM - 1:00 PM PST
Specimen Pick-up and Couriers
Telephone: 800-710-1800, option 1, or 866-875-2271
Hours of Operation: Monday - Friday 6:30 AM – 7:00 PM PST
Saturday 6:00 AM - 2:30 PM PST




