It isn't as easy as just changing to another blood thinner that does not require INR testing. I have kidney disease so I can only take Warfarin to avoid further damage to my kidneys. Also, it is very difficult for me to have blood work done (bad veins) so to have to go through this every 2 weeks would be very difficult. My doctor is fine with using the jab test kit, in fact, he was the one who suggested it.