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Contact & Support

Esoterix's client service center has a highly trained staff available to respond to all general client needs. Our client services staff ensures that clients have prompt answers to questions or concerns about  test information, specimen requirements, turnaround time, test add-ons, and patient results. Client service representatives may also direct client calls immediately to a technical or medical expert if necessary.

Client Services Center

Primary Phone:
800-444-9111
Primary Fax:
512-225-1253
Hours of Operation:
Monday–Friday 7:00 am–8:00 pm CST, Saturday 8:00 am–5:00 pm CST
Central Billing Services

Primary Phone:
800-343-4407
Patient billing phone:
800-845-6167
Hours of Operation:
Monday–Thursday 7:00 am–5:00 pm CST, Friday 7:00 am–4:00 pm CST