Self-monitoring of INR is the process whereby someone tests their own INR in the comfort of their own home using a portable INR monitor. One of the benefits of testing the INR with a portable monitor is that instead of needing to have a blood test taken, the INR result can be measured using a finger prick of blood. The monitors look and operate very much like the type of monitor you may have seen people use to test their blood sugar levels.

When an INR measurement is obtained this result is communicated to the doctor. The doctor is then able to advise on any necessary changes in warfarin dose.

Studies have shown that about one quarter of people taking warfarin may be able and interested in self-monitoring of their INR.

Remember that everyone is different! Self-monitoring is definitely not for everyone! Just as everyone will need different doses of warfarin, everyone will find a way of INR monitoring that is best for them. Discuss your options with your doctor or your pharmacist if you're interested in trying something different.  They can help find the best management option for you.