Answer: Yes, you can get an INR test onboard. A doctor’s consultation is required before the INR test. Consultation and procedural costs apply. We recommend you carry copies of your recent INR test results for reference, in addition to a letter from your healthcare provider which includes the specific condition necessitating INR testing. Guests taking warfarin/coumadin should ensure they bring sufficient medication with them for the duration of their travel, and extra medication in case a dose adjustment is required.