Alert:

This website is scheduled to undergo routine maintenance on Saturday, 18 April from 5:00 p.m.-10:00 p.m. CDT. During this time, you may not be able to schedule, reschedule or cancel test appointments. We apologize for this inconvenience and thank you for your patience.

Customer Service

Global chat

Chat is the quickest way to reach a customer service agent.

Click on the Chat icon to get started.
If chat is “offline,” see below for telephone numbers and office hours.


Americas Region

Office Hours: Monday–Friday, 7:00 a.m.–7:00 p.m. CT; closed on local holidays.

Last updated 2015-02-25