Our main focus is to ensure that you are successful with your INR self-testing and we are here to assist you every step of the way. If you receive any errors while testing your INR please stop, make note of the error number, and call Advanced Cardio Services at 1-800-769-8177. A team member will help you trouble shoot what is being done wrong and give suggestions on how to correct your testing technique. It is common to receive a few errors on your first few self-tests following your training but with our help you’ll be a pro in no time.

Advanced Cardio Services’ highly trained customer care representatives are available to assist you from 8 A.M. to 5 P.M. (PST) Monday through Friday. If you need assistance outside of our business hours you can contact the 24-7 Technical Support line for the manufacturer, Roche Diagnostics, at 800-428-4674.