This website is scheduled to undergo routine maintenance on Saturday, 18 November from 11:00 GMT - Sunday, 19 November 05:00 GMT. During this time, you may not be able to schedule, reschedule or cancel test appointments. We apologise for this inconvenience and thank you for your patience.
Click on your region below for telephone numbers and office hours.
Telephone and email addresses broken down by region
Monday–Friday, 7:00 a.m.–7:00 p.m. CT; closed on local holidays.