Thank you @brisalta very much: Fleet Medical Office at (661)753-2680 is indeed the correct number for the onboard Medical Center procedures. With your timely advice my friend now knows INR testing is possible on Princess ships. Also thanks to others who helped by weighing in.
Here is the information from "Guest Medical (PCL)" <firstname.lastname@example.org> :
Subject: INR Testing
Thank you for contacting the Guest Medical Support Team. Following is information regarding our INR testing on board.
INR testing can be performed on board using a fingerprick test during office hours. No appointment is necessary, but consultation and procedure charges will apply.
Please take your previous results with you for reference. You should also ensure you have sufficient medication for the cruise, however should you require additional Coumadin or Warfarin due to your dose being adjusted, this is stocked on board. It is advised that you carry a note of medical necessity from your doctor regarding your prescription, as this will help when clearing customs.
Usually a doctor’s consultation is required first. There are procedure and supplies costs for the blood test. A first visit for and INR check will cost in the region of $175 – this cost may be less on subsequent visits
All medical charges are added to your on-board account and need to be settled before you leave the ship. You will receive an itemized receipt detailing professional services, medications and supply charges. This should be submitted to their travel insurance as a foreign claim.
Please let me know if you have additional questions.
Guest Medical Support Team
Health Services | Princess Cruises
+1-661-753-2680 | email@example.com