Hi All, I received a aortic mechanical heart valve October 2023, with an INR range of 2.0-2.5. I would like to self-test when traveling, lab when I'm home, but the cardiology group, so far is reluctant, assuming its the liability issues. I've done some research and think I would be well served with the Roche CoaguCheck INRange system. Seems like the XS meter or supplies are being phased out. Also to calm the cardiologist, the ability to transmit the results may help me gain approval. Question #1 Is this the best home testing device for my situation? Question #2 Where in the U.S. can I purchase? I found this unit, Amazon Canada for $550 but they cant ship to the U.S.